Matthew 16 verse 18..
Hmmm. NO word “church” in that verse as the Catholic Church would have us believe. It’s “assembly” as in “assembly” of believers. Jesus said wherever 2 or 3 are gathered in my name there I am in the midst of them.
Besides, even the Catholic Church admits it was the confession that Peter made.
424 Moved by the grace of the Holy Spirit and drawn by the Father, we believe in Jesus and confess: 'You are the Christ, the Son of the living God.' On the rock of this faith confessed by St. Peter, Christ built his Church. "To preach. . . the unsearchable riches of Christ"