The “rock” was Peter’s confession that Christ was God. The “rock” is not Peter. Jesus even uses two different words - Cephas and Petros to make the distinction. Plus, if he were head of the church, why could Paul rebuke him when Peter tried to make the gentiles come under the Jewish law?

Edit he might have used lithos, I can’t recall. Petros for Peter, lithos for the rock on which the church is built.

The “rock” was Peter’s confession that Christ was God. The “rock” is not Peter. Jesus even uses two different words - Cephas and Petros to make the distinction. Plus, if he were head of the church, why could Paul rebuke him when Peter tried to make the gentiles come under the Jewish law?