Seest thou how the Father reveals the Son, how the Son the Father? For “neither knoweth any man the Father,” saith He, "save the Son, and he to whomsoever the Son will reveal Him."16 It cannot therefore be that one should learn the Son of any other than of the Father; neither that one should learn the Father of any other than of the Son. So that even hereby, their sameness of honor and of substance is manifest.
- What then saith Christ? "Thou art Simon, the son of Jonas; thou shalt be called Cephas."17 “Thus since thou hast proclaimed my Father, I too name him that begat thee;” all but saying, “As thou art son of Jonas, even so am I of my Father.” Else it were superfluous to say, “Thou art Son of Jonas;” but since he had said, “Son of God,” to point out that He is so Son of God, as the other son of Jonas, of the same substance with Him that begat Him, therefore He added this, "And I say unto thee, Thou art Peter, and upon this rock will I build my Church;“18 that is, on the faith of his confession. Hereby He signifies that many were now on the point of believing, and raises his spirit, and makes him a shepherd. “And the gates of hell” shall not prevail against it.” “And if not against it, much more not against me. So be not troubled because thou art shortly to hear that I shall be betrayed and crucified.”
Then He mentions also another honor. "And I also19 will give thee the keys of the heavens."20 But what is this, “And I also will give thee?” “As the Father hath given thee to know me, so will I also give thee.”
And He said not, “I will entreat the Father” (although the manifestation of His authority was great, and the largeness of the gift unspeakable), but, “I will give thee.” What dost Thou give? tell me. “The keys of the heavens, that whatsoever thou shalt bind on earth, shall be bound in Heaven,21 and whatsoever thou shalt loose on earth, shall be loosed in Heaven.” How then is it not "His to give to sit on His right hand, and on His left,"22 when He saith, “I will give thee”?
Seest thou how He, His own self, leads Peter on to high thoughts of Him, and reveals Himself, and implies that He is Son of God by these two promises? For those things which are peculiar to God alone, (both to absolve sins, and to make the church incapable of overthrow in such assailing waves, and to exhibit a man that is a fisher more solid than any rock, while all the world is at war with him), these He promises Himself to give; as the Father, speaking to Jeremiah, said, He would make him as "a brazen pillar, and as a wall;"23 but him to one nation only, this man in every part of the world.
I would fain inquire then of those who desire to lessen the dignity of the Son, which manner of gifts were greater, those which the Father gave to Peter, or those which the Son gave him? For the Father gave to Peter the revelation of the Son; but the Son gave him to sow that of the Father and that of Himself in every part of the world; and to a mortal man He entrusted the authority over all things in Heaven, giving him the keys; who extended the church to every part of the world, and declared it to be stronger than heaven. "For heaven and earth shall pass away, but my word shall not pass away."24 How then is He less, who hath given such gifts, hath effected such things?
And these things I say, not dividing the works of Father and Son (“for all things are made by Him, and without Him was nothing made which was made”):25 but bridling the shameless tongue of them that dare so to speak.
But see, throughout all, His authority: “I say unto thee, Thou art Peter; I will build the Church; I will give thee the keys of Heaven.”
- And then, when He had so said, "He charged them that they should tell no man that He was the Christ."26