Not to argue but when I read about when Peter identified Jesus as the Christ, I don't necessarily see Jesus' response regarding the rock as pointing at Peter but rather pointing at what Peter said. In other words, I'm not convinced that when Jesus said "Upon this rock..." that He was speaking of Peter. I sometimes wonder if He was speaking about the knowledge of God. I am not settled on this as others are.
Part of my reason for this is that Jesus didn't say "Upon you Peter, I will build my church." Another reason for my question is that throughout the old testament and even into the new testament there is a common theme that I have noticed and recently I did some digging. In the NKJV I found over 275 references where God affirmed who He was with statements similar to...
"I am the Lord."
"I am the Lord God."
"I am God."
"I am your Shield."
...as well as affirming what He wants from us with statements similar to...
"So you will know that I am the Lord."
"So you will know that I am God."
"So they will know that I am the Lord."
"Know that I am God."
Additionally Hosea 6:6 it is recorded, "For I desire mercy and not sacrifice, and the knowledge of God more than burnt offerings."
And Jesus made reference to this Scripture twice; Matthew 9:13 and again Matthew 12:7.
Just food for thought.