J. Knox Chamblin (Contemporary Presbyterian)
“By the words ‘this rock’ Jesus means not himself, nor his teaching, nor God the Father, nor Peter’s confession, but Peter himself. The phrase is immediately preceded by a direct and emphatic reference to Peter. As Jesus identifies himself as the builder, the rock on which he builds is most naturally understood as someone (or something) other than Jesus himself” “Matthew” in Evangelical Commentary on the Bible, 742].
R.T. France (Anglican)
“Jesus now sums up Peter’s significance in a name, Peter . . . It describes not so much Peter’s character (he did not prove to be ‘rock-like’ in terms of stability or reliability), but his function, as the foundation-stone of Jesus’ church. The feminine word for ‘rock’, ‘petra’, is necessarily changed to the masculine ‘petros’ (stone) to give a man’s name, but the word-play
is unmistakable (and in Aramaic would be even more so, as the same form ‘kepha’ would occur in both places). It is only Protestant overreaction to the Roman Catholic claim . . . that what is here said of Peter applies also to the later bishops of Rome, that has led some to claim that the ‘rock’ here is not Peter at all but the faith which he has just confessed. "The word-play, and the whole structure of the passage, demands that this verse is every bit as much Jesus’ declaration about Peter as verse 16 was Peter’s declaration about Jesus. Of course it is on the basis of Peter’s confession that Jesus declares his role as the Church’s foundation, but it is to Peter, not his confession, that the rock metaphor is applied…Peter is to be the foundation-stone of Jesus’ new community . . . which will last forever.” (Tyndale New Testament Commentaries, [Grand Rapids, MI: Eerdmans, 1985], vol. 1: Matthew, 254, 256)
William Hendriksen (Reformed Christian Church, Professor of New Testament Literature at Calvin Seminary)
“The meaning is, “You are Peter, that is Rock, and upon this rock, that is, on you, Peter I will build my church.” Our Lord, speaking Aramaic, probably said, “And I say to you, you are Kepha, and on this kepha I will build my church.” Jesus, then, is promising Peter that he is going to build his church on him! I accept this view.” (New Testament Commentary: Exposition of the Gospel According to Matthew [Grand Rapids, MI: Baker, 1973], page 647JPK page 14]
Donald Hagner (Contemporary Evangelical)
“The frequent attempts that have been made, largely in the past, to deny [that Peter is the rock] in favor of the view that the confession itself is the rock . . . seem to be largely motivated by Protestant prejudice against a passage that is used by the Roman Catholics to justify the papacy” (Word Biblical Commentary 33b:470).
David Hill (Presbyterian)
“It is on Peter himself, the confessor of his Messiahship, that Jesus will build the Church…Attempts to interpret the ‘rock’ as something other than Peter in person (e.g., his faith, the truth revealed to him) are due to Protestant bias, and introduce to the statement a degree of subtlety which is highly unlikely.” (The Gospel of Matthew, New Century Bible Commentary [Grand Rapids, MI: Eerdmans, 1972], 261)
Herman Ridderbos (Contemporary Dutch Reformed)
“It is well known that the Greek word petra translated ‘rock’ here is different from the proper name Peter. The slight difference between them has no special importance, however. The most likely explanation for the change from petros (‘Peter’) to petra is that petra was the normal word for ‘rock.’ . . . There is no good reason to think that Jesus switched from petros to petra to show that he was not speaking of the man Peter but of his confession as the foundation of the Church. The words ‘on this rock petra]’ indeed refer to Peter” Bible Student’s Commentary: Matthew, 303].
For the Protestant Reformers to rationalize breaking away from what was universally acknowledged in their culture as the Christian Church, it was necessary for them to deny the Catholic Church’s authority. To maintain their positions, they were forced to portray it as a kind of “anti-Church” that was unjustly claiming the prerogatives of Christ’s true (but invisible) Church.
Their chief target was, of course, the pope. To justify breaking away from the successor of Peter, they had to undercut the Petrine office itself. They were forced to deny the plain reading of Matthew 16:18—that Jesus made Peter the rock on which he would build his Church.