A Church History Series: Through the Lens of Today - Apostolic Church

A Deep Dive into the Marks of the One, Holy, catholic, and Apostolic Church

Among the four historic marks of the Church—one, holy, catholic, and apostolic—the last is perhaps the most misunderstood in the American Christian world. Countless denominations today claim to be “Bible-based” or “Jesus-centered,” yet the early Christians would have evaluated authenticity very differently.

For the first believers, the question was simple:

Is this community in the lineage of the apostles whom Christ Himself appointed and empowered?

If the answer was no, it was not considered the Church.

This principle—apostolic succession—served as Christianity’s litmus test for legitimacy. And it remains foundational for understanding the historic Church and the authority Christ intended it to possess.

Apostolic Succession: The Original Test of Church Authenticity

The earliest orthodox Christians never wondered which doctrines were true or which community had the authority to teach Christ’s gospel. Their test was consistent and universal:

Trace the line of succession of the bishops who taught it.

The apostles were not loose, independent spiritual freelancers.

They were commissioned by Christ, empowered by the Holy Spirit, entrusted with the authority to establish His Church, teach, bind and loose, forgive sins, write scripture, discern which texts would be included in the New Testament canon, and anoint bishops as their successors, etc.

Matthew 16:18–19

18 And I tell you, you are Peter, and on this rock I will build my church, and the powers of death* shall not prevail against it. 19 I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.”

• *The gates of Hades

John 20:22–23

22 And with that he breathed on them and said, “Receive the Holy Spirit. 23 If you forgive anyone’s sins, their sins are forgiven; if you do not forgive them, they are not forgiven.”

Luke 10:16

¹⁶ “He who hears you hears me, and he who rejects you rejects me, and he who rejects me rejects him who sent me.”

From the beginning, the Church was ordered, not improvised. Scripture and the earliest Christian writings describe bishops, presbyters (priests), and deacons as the new Temple hierarchy—high priests, priests, and Levites serving under Christ, the eternal High Priest.

The idea that someone in the 1600s, 1800s, or 2000s could simply declare, “We’re a church now,” without any link to the apostles, would have been unthinkable to the Christians who actually knew the apostles or lived in their wake.

Apostolic Tradition: The Faith That Doesn’t Produce “New Revelations”

Christian Truth does not get replaced by "new truth" over time. It was given once, for all, through Jesus Christ and the apostles (Jude 1:3). Because the revelation took place in real history, the earliest generations—those who knew the apostles or their successors—remain our most trustworthy guides.

The apostles entrusted their teachings (both written and oral) to their successors:

“What you have heard from me … entrust to faithful men who will be able to teach others also.” (2 Timothy 2:2)

• This verse describes at least three generations of apostolic succession.

The early Church Fathers reaffirmed this repeatedly. According to historian J. N. D. Kelly:

“The identity of the oral tradition with the original revelation is guaranteed by the unbroken succession of bishops … endowed with an infallible charism of truth.”

(Early Christian Doctrines, p. 37)

This is why unorthodox Christian groups—then and now—cannot claim continuity with the historic Church, no matter how sincerely they interpret Scripture.

The Church Fathers: Guardians and Clarifiers of the Faith

While Scripture is the written part of apostolic tradition, the apostles, early bishops and the early church fathers were responsible for preserving, explaining, and clarifying the faith in their generations.

They defended doctrines that are now considered essential to Christianity—such as:

• The Trinity

• The divinity of Christ

• The humanity of Christ

• The canon of Scripture

• Baptismal regeneration

• Real Presence Eucharist

• Apostolic authority

• The Bishopric

  
  

Without the early church fathers and bishops, there would be no New Testament canon, no Nicene Creed, no orthodox Christology, and no consistent Christian faith today.

The Three Ranks of Apostolic Ministry

By the early 2nd century, the Church universally recognized the threefold ministry of:

1. Bishops (Episcopoi)

Successors of the apostles, responsible for guarding doctrine, ordaining clergy, and overseeing multiple congregations.

2. Priests (Presbyters)

Ordained to shepherd local congregations, teach, and administer the sacraments.

3. Deacons (Diakonoi)

Assistants responsible for service, teaching, and administration.

St. Ignatius of Antioch (c. 110 AD)—A Direct Disciple of the Apostles

Ignatius, taught by both John and Paul, wrote that:

• The bishop is the visible sign of unity in the Church.

• Nothing in the Church should be done without the bishop.

• Those who reject their bishop reject God’s order and risk heresy.

• A community without a bishop, presbyters, and deacons is not a Church.

For Ignatius—and for all early Christians—the bishop was the standard of apostolic continuity.

The Problem With Modern Fragmentation

The New Testament warns repeatedly that false teachers would arise, and Christians would:

• “accumulate for themselves teachers to suit their own likings” (2 Tim. 4:3)

• reject sound doctrine

• wander into myths

  
  

When Christians disregard connection to the early church, the results are predictable:

• contradictory doctrines

• new theological innovations

• competing interpretations of Scripture

• endless splintering into smaller denominations

  
  

1 Timothy 6:20

O Timothy, guard what has been entrusted to you. Avoid the godless chatter and contradictions of what is falsely called knowledge

2 Timothy 4:3-4

3 For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own likings, 4 and will turn away from listening to the truth and wander into myths.

• This is how denominations, which are completely cut off from the early church, teach doctrines which contradict the teachings of early founders of Christ's church

• Sacrificing the Truth which was passed down, to make room for teachings that are easier to digest in our 21st Century culture.

A 21st Century Example

Modern American Christians deciding to start new congregations, without any backing from the Apostolic Church, while ignoring historical precedent in regards to:

• the interpretation of scripture

• establishing ecclesiastical polity

• formulation of doctrine for 2,000 years

Would be like waking up one day and deciding:

"I just don’t feel that the local courthouse is meeting my emotional/social needs the way I would like." - So I decide to start my own courthouse, without institutional governmental authority affirming my legitimacy.

When I start my new courthouse:

• I use traditional symbols and iconography (the American flag, Scales of Justice, etc)

• I use traditional principles ("innocent until proven guilty", "no one is above the law", etc)

• I use familiar legal terminology

  
  

But I also decide:

• I’m throwing out all existing historical legal precedent when I make rulings on cases and, instead, start from scratch using only my own, new, interpretations of the laws.

No serious person would accept my self-ascribed authority to start this new courthouse, and they would, rightly, reject all rulings, which disregard existing legal precedent, while also demonstrating that I have no authority to be making any rulings in the first place.

But, the Novel Christian Doctrines Actually Demonstrate an Even Greater Level of Hubris

The initial interpretations of the early church fathers, were handed down to them directly by the apostles - who were literally infused with the Holy Spirit, by Jesus Christ himself, in order to write, interpret, and teach the New Testament Truths.

Not relative truths.

Capital 'T' Truths.

In the case of the novel congregations, the further we proceed in time, the further we move from the original source of that Truth.

Historical legal precedent, however, is a continuation and constant refinement of human understanding, rather than a preservation of the Holy Spirit guided faith which (2,000 years ago) was "once for all delivered to the saints" (Jude 1:3).

So while we would never consider this new courthouse to have any legal authority for novel legal interpretations and to execute its conclusions - new American Christian denominations have an exponentially lesser authority, because their rejecting of, and lack of connection to, the apostolic church fathers, isn’t merely a rejection of past human interpretation, but is a rejection of Holy Spirit infused teaching, and should be treated as such.

Make American Churches Great Again

The modern church in America has failed its people by neglecting to teach them the earliest stages of church history. They have taken for granted the historicity of where Christianity comes from. Most have little, if any, historical understanding where basic, orthodox, Christian doctrine came from, and why it had to be clearly defined and solidified (in order to guard against countless attacks from various heresies).

• Many seem to believe that church history began in the 1,600s, 1,800s, or even the 2,000s.

• Many have no understanding of the battles that were fought in order to preserve the text and verbal teachings that were handed down to the church from the apostles.

Apostolic succession and church tradition operate as doctrinal guard rails, which keep interpretations of scripture within the boundaries of orthodox Christianity.

Most know American history much more than they know the history of Christ’s own church.

They’ve taken the time to study the history of America, but they’ve actively cut themselves off from early church history, which has led to doctrine that runs counter to the apostles and the early church in many instances.

To name a few:

• Denying the doctrine of baptismal regeneration

• Denying the doctrine of Real Presence Eucharist

• Teaching the doctrine of The Rapture

• etc

Being so disconnected from the early church, many don't know, or regularly recite, any of the ecumenical creeds. And in some cases, their modern novel doctrines are so counter to early church teachings that their current congregations can't even affirm something so foundational to the Christian Church as the Nicene Creed.

Modern American Christianity desperately needs to begin studying, and teaching, the first few centuries of church history, so that they can come back to orthodox positions on doctrinal teachings which were unanimous among the early church fathers.

Conclusion: The Apostolic Church Is the Church Christ Built

The early Christians did not evaluate truth by personal interpretation or preference. The standard was—and remains—objective:

Is this the Church founded by Christ, built by the apostles, and preserved through apostolic succession?

Christ promised His Church would endure and the gates of Hades will not prevail against it (Matt. 16:18). Apostolic succession is one of the means by which He ensured it.

The Early Church Fathers in Their Own Words

***One, Holy, catholic, and Apostolic Church***

Clement of Rome (Taught by Peter and Paul. 3rd Bishop of Rome)

Through countryside and city [the apostles] preached, and they appointed their earliest converts, testing them by the Spirit, to be the bishops and deacons of future believers. Nor was this a novelty, for bishops and deacons had been written about a long time earlier. . . . Our apostles knew through our Lord Jesus Christ that there would be strife for the office of bishop. For this reason, therefore, having received perfect foreknowledge, they appointed those who have already been mentioned and afterwards added the further provision that, if they should die, other approved men should succeed to their ministry

(Letter to the Corinthians 42:4–5, 44:1–3 [A.D. 80])

Irenaeus (Taught by Polycarp, who was taught by John)

As I have already observed, the Church, having received this preaching and this faith, although scattered throughout the whole world, yet, as if occupying but one house, carefully preserves it. She also believes these points (of doctrine] just as if she had but one soul, and one and the same heart, and she proclaims them, and teaches them, and hands them down, with perfect harmony, as if she possessed only one mouth. For, although the languages of the world are dissimilar, yet the import of the tradition is one and the same. For the Churches which have been planted in Germany do not believe or hand down anything different, nor do those in Spain, nor those in Gaul, nor those in the East, nor those in Egypt, nor those in Libya, nor those which have been established in the central regions of the world. But as the sun, that creature of God, is one and the same throughout the whole world, so also the preaching of the truth shines everywhere, and enlightens all men that are willing to come to a knowledge of the truth.

(Against Heresies 1:10:2 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

Nor will any one of the rulers in the churches, however highly gifted he may be in point of eloquence, teach doctrines different from these (for no one is greater than the Master); nor, on the other hand, will he who is deficient in power of expression inflict injury on the tradition. For the faith being ever one and the same, neither does one who is able at great length to discourse regarding it make any addition to it, nor does one who can say but little diminish it.

(Against Heresies 1:10:2 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

But, again, when we refer them [heretics] to that tradition which originates from the apostles, [and] which is preserved by means of the succession of presbyters [priests) in the Churches, they object to tradition, saying that they themselves are wiser not merely than the presbyters, but even than the apostles, because they have discovered the unadulterated truth.

(Against Heresies 3:2:2 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

For [they maintain] that the apostles intermingled the things of the law with the words of the Savior; and that not the apostles alone, but even the Lord Himself, spoke as at one time from the Demiurge, at another from the intermediate place, and yet again from the Pleroma, but that they themselves, indubitably, unsullied, and purely, have knowledge of the hidden mystery: this is, indeed, to blaspheme their Creator after a most impudent manner! It comes to this, therefore, that these men do now consent neither to Scripture nor to tradition.

(Against Heresies 3:2:2 [A.D. 189])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

Now, therefore, it has been my privilege to see you in the person of your God-inspired bishop, Damas; and in the persons of your worthy presbyters, Bassus and Apollonius; and my fellow-servant, the deacon, Zotion. What a delight is his company! For he is subject to the bishop as to the grace of God, and to the presbytery as to the law of Jesus Christ

(Letter to the Magnesians 2 [A.D. 110])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

Take care to do all things in harmony with God, with the bishop presiding in the place of God, and with the presbyters in the place of the council of the apostles, and with the deacons, who are most dear to me, entrusted with the business of Jesus Christ, who was with the Father from the beginning and is at last made manifest

(Letter to the Magnesians 6:1 [A.D. 110])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

Take care, therefore, to be confirmed in the decrees of the Lord and of the apostles, in order that in everything you do, you may prosper in body and in soul, in faith and in love, in Son and in Father and in Spirit, in beginning and in end, together with your most reverend bishop; and with that fittingly woven spiritual crown, the presbytery; and with the deacons, men of God

(Letter to the Magnesians 13:1-2 [A.D. 110])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

It is necessary, therefore—and such is your practice that you do nothing without the bishop, and that you be subject also to the presbytery, as to the apostles of Jesus Christ our hope, in whom we shall be found, if we live in him. It is necessary also that the deacons, the dispensers of the mysteries [sacraments] of Jesus Christ, be in every way pleasing to all men

(Letter to the Trallians 2:1–3 [A.D. 110])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

In like manner let everyone respect the deacons as they would respect Jesus Christ, and just as they respect the bishop as a type of the Father, and the presbyters as the council of God and college of the apostles. Without these, it cannot be called a church

 (Letter to the Trallians 3:1–2 [A.D. 110])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

He that is within the sanctuary is pure; but he that is outside the sanctuary is not pure. In other words, anyone who acts without the bishop and the presbytery and the deacons does not have a clear conscience

(Letter to the Trallians 7:2 [A.D. 110])

Ignatius of Antioch (Taught by John and Paul. 2nd Bishop at Antioch (successor of Peter))

I cried out while I was in your midst, I spoke with a loud voice, the voice of God: ‘Give heed to the bishop and the presbytery and the deacons.’ Some suspect me of saying this because I had previous knowledge of the division certain persons had caused; but he for whom I am in chains is my witness that I had no knowledge of this from any man. It was the Spirit who kept preaching these words, ‘Do nothing without the bishop, keep your body as the temple of God, love unity, flee from divisions, be imitators of Jesus Christ, as he was imitator of the Father’

(Letter to the Philadelphians 7:1–2 [A.D. 110])

Hegesippus

When I had come to Rome, I [visited] Anicetus, whose deacon was Eleutherus. And after Anicetus [died], Soter succeeded, and after him Eleutherus. In each succession and in each city there is a continuance of that which is proclaimed by the law, the prophets, and the Lord

(Memoirs, cited in Eusebius, Ecclesiastical History 4:22 [A.D. 180])

Irenaeus (Taught by Polycarp, who was taught by John)

It is possible, then, for everyone in every church, who may wish to know the truth, to contemplate the tradition of the apostles which has been made known to us throughout the whole world. And we are in a position to enumerate those who were instituted bishops by the apostles and their successors down to our own times, men who neither knew nor taught anything like what these heretics rave about. For if the apostles had known hidden mysteries, which they were in the habit of imparting to "the perfect" apart and privately from the rest, they would have delivered them especially to those to whom they were also committing the churches themselves. For they were desirous that these men should be very perfect and blameless in all things, whom also they were leaving behind as their successors, delivering up their own place of government to these men; which men, if they discharged their functions honestly, would be a great boon [to the Church), but if they should fall away, the direst calamity.

(Against Heresies 3:3:1 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

But since it would be too long to enumerate in such a volume as this the successions of all the churches, we shall confound all those who, in whatever manner, whether through self-satisfaction or vainglory, or through blindness and wicked opinion, assemble other than where it is proper, by pointing out here the successions of the bishops of the greatest and most ancient church known to all, founded and organized at Rome by the two most glorious apostles, Peter and Paul—that church which has the tradition and the faith with which comes down to us after having been announced to men by the apostles. For with this Church, because of its superior origin, all churches must agree, that is, all the faithful in the whole world. And it is in her that the faithful everywhere have maintained the apostolic tradition

(Against Heresies 3:3:2 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

Polycarp also was not only instructed by apostles, and conversed with many who had seen Christ, but was also, by apostles in Asia, appointed bishop of the church in Smyrna, whom I also saw in my early youth, for he tarried [on earth] a very long time, and, when a very old man, gloriously and most nobly suffering martyrdom, departed this life, having always taught the things which he had learned from the apostles, and which the Church has handed down, and which alone are true. To these things all the Asiatic churches testify, as do also those men who have succeeded Polycarp down to the present time

(Against Heresies 3:3:4 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

Thus, then, have all these men been exposed [heretics], who bring in impious doctrines regarding our Maker and Framer, who also formed this world, and above whom there is no other God; and those have been overthrown by their own arguments who teach falsehoods regarding the substance of our Lord, and the dispensation which He fulfilled for the sake of His own creature man. But (it has, on the other hand, been shown], that the preaching of the Church is everywhere consistent, and continues in an even course, and receives testimony from the prophets, the apostles, and all the disciples— as I have proved— through [those in] the beginning, the middle, and the end, and through the entire dispensation of God, and that well-grounded system which tends to man's salvation, namely, our faith; which, having been received from the Church, we do preserve, and which always, by the Spirit of God, renewing its youth, as if it were some precious deposit in an excellent vessel, causes the vessel itself containing it to renew its youth also. For this gift of God has been entrusted to the Church, as breath was to the first created man, for this purpose, that all the members receiving it may be vivified; and the [means off communion with Christ has been distributed throughout it, that is, the Holy Spirit, the earnest of incorruption, the means of confirming our faith, and the ladder of ascent to God.

(Against Heresies 3:24:1 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

"For in the Church," it is said, "God has set apostles, prophets, teachers" (1 Cor. 12:28), and all the other means through which the Spirit works; of which all those are not partakers who do not join themselves to the Church, but defraud themselves of life through their perverse opinions and infamous behavior. For where the Church is, there is the Spirit of God; and where the Spirit of God is, there is the Church, and every kind of grace; but the Spirit is truth. Those, therefore, who do not partake of Him, are neither nourished into life from the mother's breasts, nor do they enjoy that most limpid fountain which issues from the body of Christ; but they dig for themselves broken cisterns [Jer. 2:13] out of earthly trenches, and drink putrid water out of the mire, fleeing from the faith of the Church lest they be convicted; and rejecting the Spirit, that they may not be instructed.

(Against Heresies 3:24:1 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

[I]t is incumbent to obey the presbyters who are in the Church—those who, as I have shown, possess the succession from the apostles; those who, together with the succession of the episcopate, have received the certain gift of truth [Kelly translates this as “infallible charism of truth” in the passage cited above] according to the good pleasure of the Father. But [it is also incumbent] to hold in suspicion others who depart from the primitive succession, and assemble themselves together in any place whatsoever, either as heretics of perverse minds, or as schismatics puffed up and self-pleasing, or again as hypocrites, acting thus for the sake of lucre and vainglory. For all these have fallen from the truth. And the heretics, indeed, who bring strange fire to the altar of God—namely, strange doctrines-shall be burned up by the fire from heaven, as were Nadab and Abihu [Lev. 10:1-2]. But such as rise up in opposition to the truth, and exhort others against the Church of God, [shall] remain among those in hell (apud inferos), being swallowed up by an earthquake, even as those who were with Korah, Dathan, and Abihu [Num. 16:33].

(Against Heresies 4:26:2 [A.D. 189])

Irenaeus (Taught by Polycarp, who was taught by John)

The true knowledge is the doctrine of the apostles, and the ancient organization of the Church throughout the whole world, and the manifestation of the body of Christ according to the succession of bishops, by which succession the bishops have handed down the Church which is found everywhere

(Against Heresies 4:33:8 [A.D. 189])

Clement of Alexandria

A multitude of other pieces of advice to particular persons is written in the holy books: some for presbyters, some for bishops and deacons; and others for widows, of whom we shall have opportunity to speak elsewhere

(The Instructor of Children 3:12:97:2 [A.D. 191])

Clement of Alexandria

Even here in the Church the gradations of bishops, presbyters, and deacons happen to be imitations, in my opinion, of the angelic glory and of that arrangement which, the scriptures say, awaits those who have followed in the footsteps of the apostles and who have lived in complete righteousness according to the gospel

(Miscellanies 6:13:107:2 [A.D. 208])

Tertullian

[The apostles] founded churches in every city, from which all the other churches, one after another, derived the tradition of the faith, and the seeds of doctrine, and are every day deriving them, that they may become churches. Indeed, it is on this account only that they will be able to deem themselves apostolic, as being the offspring of apostolic churches. Every sort of thing must necessarily revert to its original for its classification. Therefore the churches, although they are so many and so great, comprise but the one primitive Church, [founded] by the apostles, from which they all [spring]. In this way, all are primitive, and all are apostolic, while they are all proved to be one in unity

(Demurrer Against the Heretics 20 [A.D. 200])

Tertullian

[W]hat it was which Christ revealed to them [the apostles] can, as I must here likewise prescribe, properly be proved in no other way than by those very churches which the apostles founded in person, by declaring the gospel to them directly themselves . . . If then these things are so, it is in the same degree manifest that all doctrine which agrees with the apostolic churches—those molds and original sources of the faith must be reckoned for truth, as undoubtedly containing that which the churches received from the apostles, the apostles from Christ, [and] Christ from God. Whereas all doctrine must be prejudged as false which savors of contrariety to the truth of the churches and apostles of Christ and God. It remains, then, that we demonstrate whether this doctrine of ours, of which we have now given the rule, has its origin in the tradition of the apostles, and whether all other doctrines do not ipso facto proceed from falsehood

(Demurrer Against the Heretics 21 [A.D. 200])

Tertullian

But if there be any [heresies] which are bold enough to plant [their origin] in the midst of the apostolic age, that they may thereby seem to have been handed down by the apostles, because they existed in the time of the apostles, we can say: Let them produce the original records of their churches; let them unfold the roll of their bishops, running down in due succession from the beginning in such a manner that [their first] bishop shall be able to show for his ordainer and predecessor some one of the apostles or of apostolic men—a man, moreover, who continued steadfast with the apostles. For this is the manner in which the apostolic churches transmit their registers: as the church of Smyrna, which records that Polycarp was placed therein by John; as also the church of Rome, which makes Clement to have been ordained in like manner by Peter

(Demurrer Against the Heretics 32 [A.D. 200])

Tertullian

But should they even effect the contrivance [of composing a succession list for themselves], they will not advance a step. For their very doctrine, after comparison with that of the apostles [as contained in other churches], will declare, by its own diversity and contrariety, that it had for its author neither an apostle nor an apostolic man; because, as the apostles would never have taught things which were self-contradictory

(Demurrer Against the Heretics 32 [A.D. 200])

Tertullian

Then let all the heresies, when challenged to these two tests by our apostolic Church, offer their proof of how they deem themselves to be apostolic. But in truth they neither are so, nor are they able to prove themselves to be what they are not. Nor are they admitted to peaceful relations and communion by such churches as are in any way connected with apostles, inasmuch as they are in no sense themselves apostolic because of their diversity as to the mysteries of the faith

(Demurrer Against the Heretics 32 [A.D. 200])

Hippolytus

When a deacon is to be ordained, he is chosen after the fashion of those things said above, the bishop alone in like manner imposing his hands upon him as we have prescribed. In the ordaining of a deacon, this is the reason why the bishop alone is to impose his hands upon him: he is not ordained to the priesthood, but to serve the bishop and to fulfill the bishop’s command. He has no part in the council of the clergy, but is to attend to his own duties and is to acquaint the bishop with such matters as are needful…On a presbyter, however, let the presbyters impose their hands because of the common and like Spirit of the clergy. Even so, the presbyter has only the power to receive [the Spirit], and not the power to give [the Spirit]. That is why a presbyter does not ordain the clergy; for at the ordaining of a presbyter, he but seals while the bishop ordains

(The Apostolic Tradition 9 [A.D. 215])

Council of Elvira

Bishops, presbyters, and deacons may not leave their own places for the sake of commerce, nor are they to be traveling about the provinces, frequenting the markets for their own profit. Certainly for the procuring of their own necessities they can send a boy or a freedman or a hireling or a friend or whomever, but, if they wish to engage in business, let them do so within the province

(Canon 19 [A.D. 300])

Cyprian of Carthage

Our Lord, whose commands we ought to observe, says in the Gospel, by way of assigning the episcopal dignity and settling the plans for His Church; ‘I say to you that you are Peter and upon this rock I will build my Church and the gates of hell will not overcome it. I will give you the keys to the Kingdom of Heaven and whatever you bind on earth will be bound in Heaven and whatever you loose on earth will be loosed in Heaven.’ (Matt 16:18-19). From that time, the ordination of Bishops and the plan of the Church flows on through the changes of times and successions; for the Church is founded upon the Bishops. Since then this is founded on divine law, I marvel that some, with bold daring, have ventured to write to me as if they wrote in the name of the Church; whereas the Church is established in the bishop, and clergy, and all who stand fast.

(Letter to the Lapsed 33.1 [A.D. 250])

Cyprian of Carthage

[T]he Church is one, and as she is one, cannot be both within and without. For if she is with [the heretic] Novatian, she was not with [Pope] Cornelius. But if she was with Cornelius, who succeeded the bishop [of Rome], Fabian, by lawful ordination, and whom, beside the honor of the priesthood the Lord glorified also with martyrdom, Novatian is not in the Church; nor can he be reckoned as a bishop, who, succeeding to no one, and despising the evangelical and apostolic tradition, sprang from himself. For he who has not been ordained in the Church can neither have nor hold to the Church in any way

(Letters 69[75]:3 [A.D. 253])

Council of Nicaea I

It has come to the knowledge of the holy and great synod that, in some districts and cities, the deacons administer the Eucharist to the presbyters [i.e., priests], whereas neither canon nor custom permits that they who have no right to offer [the Eucharistic sacrifice] should give the Body of Christ to them that do offer [it]. And this also has been made known, that certain deacons now touch the Eucharist even before the bishops. Let all such practices be utterly done away, and let the deacons remain within their own bounds, knowing that they are the ministers of the bishop and the inferiors of the presbyters. Let them receive the Eucharist according to their order, after the presbyters, and let either the bishop or the presbyter administer to them

(Canon 18 [A.D. 325])

Augustine

[T]here are many other things which most properly can keep me in [the Catholic Church’s] bosom. The unanimity of peoples and nations keeps me here. Her authority, inaugurated in miracles, nourished by hope, augmented by love, and confirmed by her age, keeps me here. The succession of priests, from the very see of the apostle Peter, to whom the Lord, after his resurrection, gave the charge of feeding his sheep [John 21:15–17], up to the present episcopate, keeps me here

(Against the Letter of Mani Called “The Foundation” 4:5 [A.D. 397])

John Chrysostom

[In Philippians 1:1 Paul says,] ‘To the co-bishops and deacons.’ What does this mean? Were there plural bishops of some city? Certainly not! It is the presbyters that [Paul] calls by this title; for these titles were then interchangeable, and the bishop is even called a deacon. That is why, when writing to Timothy, he says, ‘Fulfill your diaconate’ [2 Tim. 4:5], although Timothy was then a bishop. That he was in fact a bishop is clear when Paul says to him, ‘Lay hands on no man lightly’ [1 Tim. 5:22], and again, ‘Which was given you with the laying on of hands of the presbytery’ [1 Tim. 4:14], and presbyters would not have ordained a bishop

(Homilies on Philippians 1:1 [A.D. 402])

Irenaeus (Taught by Polycarp, who was taught by John)

Suppose there arise a dispute relative to some important question among us, should we not have recourse to the most ancient Churches with which the apostles held constant intercourse, and learn from them what is certain and clear in regard to the present question? For how should it be if the apostles themselves had not left us writings? Would it not be necessary, [in that case,] to follow the course of the tradition which they handed down to those to whom they did commit the Churches?

(Against Heresies 3:4:1 [A.D. 189])

Clement of Alexandria

Those, then, that adhere to impious words, and dictate them to others, in as much as they do not make a right but a perverse use of the divine words, neither themselves enter into the kingdom of heaven, nor permit those whom they have deluded to attain the truth. But not having the key of entrance, but a false…, a counterfeit key, by which they do not enter in as we enter in, through the tradition of the Lord, by drawing aside the curtain; but bursting through the side-door, and digging clandestinely through the wall of the Church, and stepping over the truth, they constitute themselves the Mystagogues of the soul of the impious.

(The Stromata 7.17 [A.D. 198])