Adam Clarke
Peter, πετρος, signifies a stone, or fragment of a rock; and our Lord, whose constant custom it was to rise to heavenly things through the medium of earthly, takes occasion from the name, the metaphorical meaning of which was strength and stability, to point out the solidity of the confession, and the stability of that cause which should be founded on The Christ, the Son of the Living God. See the notes at
Luke 9:62.
Upon this very rock, επι ταυτη τη πετρα - this true confession of thine - that I am The Messiah, that am come to reveal and communicate The Living God, that the dead, lost world may be saved - upon this very rock, myself, thus confessed (alluding probably to
Psalm 118:22, The Stone which the builders rejected is become the Head-Stone of the Corner: and to
Isaiah 28:16, Behold I lay a Stone in Zion for a Foundation) - will I build my Church, μου την εκκλησιαν, my assembly, or congregation, i.e. of persons who are made partakers of this precious faith. That Peter is not designed in our Lord's words must be evident to all who are not blinded by prejudice. Peter was only one of the builders in this sacred edifice,
Ephesians 2:20 who himself tells us, (with the rest of the believers), was built on this living foundation stone:
1 Peter 2:4,
1 Peter 2:5, therefore Jesus Christ did not say, on thee, Peter, will I build my Church, but changes immediately the expression, and says, upon that very rock, επι ταυτη τη πετρα, to show that he neither addressed Peter, nor any other of the apostles. So, the supremacy of Peter, and the infallibility of the Church of Rome, must be sought in some other scripture, for they certainly are not to be found in this. On the meaning of the word Church, see at the conclusion of this chapter.