Matthew 16

Peter's confession at Caesarea Philippi is the structural hinge of the gospel. Everything before it has been the demonstration of authority in teaching and deed; everything after it is the march toward Jerusalem and the cross. The question Jesus poses — who do you say I am — is the gospel's central question, and Peter's answer — you are the Christ, the Son of the living God — is the answer the gospel has been preparing. What is distinctive to Matthew is the response: the rock saying with its three elements — the foundation, the church that the gates of hell will not prevail against, and the keys of the kingdom with the binding and loosing authority. The passage has generated more sustained theological controversy than almost any other in the gospel, centered on the question of whether Peter himself is the rock, or his confession, or Christ. The grammatical shift between Petros and petra in Greek — the pun works better in Aramaic, where Cephas and kepha are the same word — has been read as distinguishing between the person and the confession. The Roman Catholic, Orthodox, and Protestant readings all return to this verse.

The first passion prediction immediately follows the confession and introduces a theme that will dominate the rest of the gospel. Peter's protest — far be it from you, Lord, this will never happen to you — and the rebuke — get behind me, Satan — places in sequence the highest moment of Peter's discipleship and the sharpest demonstration of its limits. The logic of the rebuke is the logic of the temptation in chapter 4: the devil had also offered a way to the kingdom that avoided the cross. Peter's protest is not malicious; it is the protest of a man who loves Jesus and cannot yet understand that the way to the resurrection runs through the death. The saying that follows — whoever would save his life will lose it; whoever loses his life for my sake will find it — is the gospel's central paradox, and it is placed immediately after the rebuke to show that the logic applies first to the disciples themselves.