(1) Scriptural Backing
* Three Popes are mentioned in the Bible (Saint Peter in Matthew 16:16, Saint Linus in 2 Timothy 4:21, and Saint Clement in Philippians 4:3).
**There is only one Pope as there was only one Israeli High Priest. Compare Psalm 110:4 with Hebrews 5:6.
***Saint Peter is mentioned in more instances in the Apostles than all of the other Apostles combined.
Matthew 16:18 (Rock of the Church)
Matthew 10:2 (Peter first among Apostles)
Matthew 18:21 (Peter speaks for Apostles)
Matthew 23:3 (Therefore, do and observe all things whatsoever they tell you, but do not follow their example. For they preach but they do not practice.) Luke 5:1-10 (Peter’s boat chosen)
Luke 22:32 (To Peter “Strengthen your brethren”)
John 21:17 (To Peter “Feed my Sheep”
Acts 2:14 (Peter leads Apostles) Acts 3:6-7 (Peter performs first Pentecostal Miracle)
Acts 15:7 (Council of Jerusalem)
Galatians 1:18-20 (Paul travels TO Peter the Pope)
Matthew 16 And Jesus answering, said to him: Blessed art thou, Simon Bar-Jona: because flesh and blood hath not revealed it to thee, but my Father who is in heaven. 18 And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it. 19 And I will give to thee the keys of the kingdom of heaven. And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth, it shall be loosed also in heaven.
Matthew 10 2 The names of the twelve apostles[c] are these: first, Simon called Peter, and his brother Andrew; James, the son of Zebedee, and his brother John; 3 Philip and Bartholomew, Thomas and Matthew the tax collector; James, the son of Alphaeus, and Thaddeus; 4 Simon the Cananean, and Judas Iscariot who betrayed him
John 1 “42 Then he brought him to Jesus. Jesus looked at him and said, “You are Simon the son of John;[a] you will be called Cephas” (which is translated Peter).”
Matthew 4 “18 As he was walking by the Sea of Galilee, he saw two brothers, Simon who is called Peter, and his brother Andrew, casting a net into the sea; they were fishermen.”
Luke 6 “14 Simon, whom he named Peter,[f] and his brother Andrew, James, John, Philip, Bartholomew . . . “
Galatians 1 Then, after three years, I went to Jerusalem, to see Peter, and I tarried with him fifteen days.
John 21 15 When they had finished breakfast, Jesus said to Simon Peter,[i] “Simon, son of John, do you love me more than these?”[j] He said to him, “Yes, Lord, you know that I love you.” He said to him, “Feed my lambs.” 16 He then said to him a second time, “Simon, son of John, do you love me?” He said to him, “Yes, Lord, you know that I love you.” He said to him, “Tend my sheep.” 17 He said to him the third time, “Simon, son of John, do you love me?” Peter was distressed that he had said to him a third time, “Do you love me?” and he said to him, “Lord, you know everything; you know that I love you.” [Jesus] said to him, “Feed my sheep.”
(2) Patristics
(A) Saint Clement of Alexandria
“[T]he blessed Peter, the chosen, the preeminent, the first among the disciples, for whom alone with himself the Savior paid the tribute [Matt. 17:27], quickly grasped and understood their meaning. And what does he say? ‘Behold, we have left all and have followed you’ [Matt. 19:27; Mark 10:28]” (Who Is the Rich Man That Is Saved? 21:3–5 [A.D. 200]).
(B) The Letter of Clement to James
“Be it known to you, my lord, that Simon [Peter], who, for the sake of the true faith, and the most sure foundation of his doctrine, was set apart to be the foundation of the Church, and for this end was by Jesus himself, with his truthful mouth, named Peter, the first fruits of our Lord, the first of the apostles; to whom first the Father revealed the Son; whom the Christ, with good reason, blessed” (Letter of Clement to James 1 [A.D. 221]).
(C) Saint Cyprian of Carthage
The Lord says to Peter: ‘I say to you,’ he says, ‘that you are Peter, and upon this rock I will build my Church.’ . . . On him [Peter] he builds the Church, and to him he gives the command to feed the sheep [John 21:17], and although he assigns a like power to all the apostles, yet he founded a single chair [cathedra], and he established by his own authority a source and an intrinsic reason for that unity. Indeed, the others were that also which Peter was [i.e., apostles], but a primacy is given to Peter, whereby it is made clear that there is but one Church and one chair. So too, all [the apostles] are shepherds, and the flock is shown to be one, fed by all the apostles in single-minded accord. If someone does not hold fast to this unity of Peter, can he imagine that he still holds the faith? If he [should] desert the chair of Peter upon whom the Church was built, can he still be confident that he is in the Church?” (The Unity of the Catholic Church 4; 1st edition [A.D. 251]).
(D) Saint Cyril of Jerusalem
“The Lord is loving toward men, swift to pardon but slow to punish. Let no man despair of his own salvation. Peter, the first and foremost of the apostles, denied the Lord three times before a little servant girl, but he repented and wept bitterly” (Catechetical Lectures 2:19 [A.D. 350]). “[Simon Magus] so deceived the city of Rome that Claudius erected a statue of him. . . . While the error was extending itself, Peter and Paul arrived, a noble pair and the rulers of the Church, and they set the error aright. . . . [T]hey launched the weapon of their like-mindedness in prayer against the Magus, and struck him down to earth. It was marvelous enough, and yet no marvel at all, for Peter was there—he that carries about the keys of heaven [Matt. 16:19]” (ibid., 6:14). “In the power of the same Holy Spirit, Peter, both the chief of the apostles and the keeper of the keys of the kingdom of heaven, in the name of Christ healed Aeneas the paralytic at Lydda, which is now called Diospolis [Acts 9:32–34]” (ibid., 17:27).
(E) Saint Ephraim The Syrian
“[Jesus said:] Simon, my follower, I have made you the foundation of the holy Church. I betimes called you Peter, because you will support all its buildings. You are the inspector of those who will build on Earth a Church for me. If they should wish to build what is false, you, the foundation, will condemn them. You are the head of the fountain from which my teaching flows; you are the chief of my disciples. Through you I will give drink to all peoples. Yours is that life-giving sweetness which I dispense. I have chosen you to be, as it were, the firstborn in my institution so that, as the heir, you may be executor of my treasures. I have given you the keys of my kingdom. Behold, I have given you authority over all my treasures” (Homilies 4:1 [A.D. 351]).
(F) Pope Saint Damasus I
“Likewise it is decreed . . . that it ought to be announced that . . . the holy Roman Church has been placed at the forefront not by the conciliar decisions of other churches, but has received the primacy by the evangelic voice of our Lord and Savior, who says: ‘You are Peter, and upon this rock I will build my Church, and the gates of hell will not prevail against it; and I will give to you the keys of the kingdom of heaven . . . ’ [Matt. 16:18–19]. The first see, therefore, is that of Peter the apostle, that of the Roman Church, which has neither stain nor blemish nor anything like it” (Decree of Damasus 3 [A.D. 382]).
(G) Saint Jerome
“‘But,’ you [Jovinian] will say, ‘it was on Peter that the Church was founded’ [Matt. 16:18]. Well . . . one among the twelve is chosen to be their head in order to remove any occasion for division” (Against Jovinian 1:26 [A.D. 393]).
(H) Pope Saint Innocent I
“In seeking the things of God . . . you have acknowledged that judgment is to be referred to us [the pope], and have shown that you know that is owed to the Apostolic See [Rome], if all of us placed in this position are to desire to follow the apostle himself [Peter] from whom the episcopate itself and the total authority of this name have emerged” (Letters 29:1 [A.D. 408]).
(I) Saint Augustine
“Among these [apostles] Peter alone almost everywhere deserved to represent the whole Church. Because of that representation of the Church, which only he bore, he deserved to hear ‘I will give to you the keys of the kingdom of heaven’” (Sermons 295:2 [A.D. 411]). “Some things are said which seem to relate especially to the apostle Peter, and yet are not clear in their meaning unless referred to the Church, which he is acknowledged to have represented in a figure on account of the primacy which he bore among the disciples. Such is ‘I will give unto you the keys of the kingdom of heaven,’ and other similar passages” (Commentary on Psalm 108 1 [A.D. 415]). “Who is ignorant that the first of the apostles is the most blessed Peter?” (Commentary on John 56:1 [A.D. 416]).
(J) Council of Ephesus
“Philip, presbyter and legate of [Pope Celestine I] said: ‘We offer our thanks to the holy and venerable synod, that when the writings of our holy and blessed pope had been read to you . . . you joined yourselves to the holy head also by your holy acclamations. For your blessedness is not ignorant that the head of the whole faith, the head of the apostles, is blessed Peter the apostle’” (Acts of the Council, session 2 [A.D. 431]). “Philip, the presbyter and legate of the Apostolic See [Rome] said: ‘There is no doubt, and in fact it has been known in all ages, that the holy and most blessed Peter, prince and head of the apostles, pillar of the faith, and foundation of the Catholic Church, received the keys of the kingdom from our Lord Jesus Christ, the Savior and Redeemer of the human race, and that to him was given the power of loosing and binding sins: who down even to today and forever both lives and judges in his successors’” (ibid., session 3).
(K) Pope Saint Leo I
“Our Lord Jesus Christ . . . has placed the principal charge on the blessed Peter, chief of all the apostles, and from him as from the head wishes his gifts to flow to all the body, so that anyone who dares to secede from Peter’s solid rock may understand that he has no part or lot in the divine mystery. He wished him who had been received into partnership in his undivided unity to be named what he himself was, when he said: ‘You are Peter, and upon this rock I will build my Church’ [Matt. 16:18], that the building of the eternal temple might rest on Peter’s solid rock, strengthening his Church so surely that neither could human rashness assail it nor the gates of hell prevail against it” (Letters 10:1 [A.D. 445).
