St. Cyprian of Carthage died ca. 258
Our Lord, whose precepts and admonitions we ought to observe, describing the honour of a bishop and the order of His Church, speaks in the Gospel, and says to Peter: I say unto you, That you are Peter, and upon this rock will I build my Church; and the gates of hell shall not prevail against it. And I will give unto you the keys of the kingdom of heaven: and whatsoever you shall bind on earth shall be bound in heaven: and whatsoever you shall loose on earth shall be loosed in heaven.
Thence, through the changes of times and successions, the ordering of bishops and the plan of the Church flow onwards; so that the Church is founded upon the bishops, and every act of the Church is controlled by these same rulers. Since this, then, is founded on the divine law, I marvel that some, with daring temerity, have chosen to write to me as if they wrote in the name of the Church; when the Church is established in the bishop and the clergy, and all who stand fast in the faith. (Epistle 26.1)
And the Lord also in the Gospel, when disciples forsook Him as He spoke, turning to the twelve, said, Will you also go away?
then Peter answered Him, Lord, to whom shall we go? You have the word of eternal life; and we believe, and are sure, that You are the Son of the living God.
(Jn. 6:67-69) Peter speaks there, on whom the Church was to be built, teaching and showing in the name of the Church, that although a rebellious and arrogant multitude of those who will not hear and obey may depart, yet the Church does not depart from Christ; and they are the Church who are a people united to the priest, and the flock which adheres to its pastor. Whence you ought to know that the bishop is in the Church, and the Church in the bishop; and if any one be not with the bishop, that he is not in the Church, and that those flatter themselves in vain who creep in, not having peace with God’s priests, and think that they communicate secretly with some; while the Church, which is Catholic and one, is not cut nor divided, but is indeed connected and bound together by the cement of priests who cohere with one another. (Epistle 68.8)
If any one consider and examine these things, there is no need for lengthened discussion and arguments. There is easy proof for faith in a short summary of the truth. The Lord speaks to Peter, saying, I say unto you, that you are Peter; and upon this rock I will build my Church, and the gates of hell shall not prevail against it. And I will give unto you the keys of the kingdom of heaven; and whatsoever you shall bind on earth shall be bound also in heaven, and whatsoever you shall loose on earth shall be loosed in heaven.
And again to the same He says, after His resurrection, Feed my sheep.
And although to all the apostles, after His resurrection, He gives an equal power, and says, As the Father has sent me, even so send I you: Receive the Holy Ghost: Whose soever sins you remit, they shall be remitted unto him; and whose soever sins you retain, they shall be retained; (
Jn. 20:21) yet, that He might set forth unity, He arranged by His authority the origin of that unity, as beginning from one. Assuredly the rest of the apostles were also the same as was Peter, endowed with a like partnership both of honour and power; but the beginning proceeds from unity. Which one Church, also, the Holy Spirit in the Song of Songs designated in the person of our Lord, and says, My dove, my spotless one, is but one. She is the only one of her mother, elect of her that bare her.
(Song of Songs 6:9) Does he who does not hold this unity of the Church think that he holds the faith? Does he who strives against and resists the Church trust that he is in the Church, when moreover the blessed Apostle Paul teaches the same thing, and sets forth the sacrament of unity, saying, There is one body and one
spirit
, one hope of your calling, one
Lord
, one faith, one baptism, one God?
(
Eph. 4:4)
And this unity we ought firmly to hold and assert, especially those of us that are bishops who preside in the Church, that we may also prove the episcopate itself to be one and undivided. Let no one deceive the brotherhood by a falsehood: let no one corrupt the truth of the faith by perfidious prevarication. The episcopate is one, each part of which is held by each one for the whole. The Church also is one, which is spread abroad far and wide into a multitude by an increase of fruitfulness. (Treatise 1: On the Unity of the Church 4-5)