Upon this Rock = The Rock is The Truth of Jesus Christ. Believing that he is the Son of the Living God and No man comes to the Father except through Him. Through his Death, Burial, and Resurrection everything else is built upon.
Are you ignoring Christ’s words to Peter?
“You are Cephas and upon this rock I will build my church.”
And again in John:
“You are Simon the son of John;
you will be called Cephas” — which is translated Peter.
If Jesus did not intend to give some sort of authority to Peter, how do you explain Jesus’ words: “I will give you the Keys of the Kingdom. Whatever you bind on earth shall be bound in heaven; whatever you loose on earth shall be loosed in heaven”?
And, if Jesus did NOT intend us to understand that he was building his church on Peter (”Rock”), why did Jesus stupidly RENAME Simon as “Rock.” Why would Jesus deliberately mislead the apostles and all future generations?