One does not have to look any farther than 1 Corinthians 3: 10-11 to see that Jesus is the Rock on which the Church is built:
10 By the grace God has given me, I laid a foundation as a wise builder, and someone else is building on it. But each one should build with care. 11 For no one can lay any foundation other than the one already laid, which is Jesus Christ.
So why does the Roman Catholic Church insist that Peter is the rock on which the Church is built? Well the RCC is in error, by saying Jesus said that he would build his Church on him (Peter) when they refer to Matthew 16: 18,
18 And I tell you that you are Peter] and on this rock I will build my church, and the gates of Hades will not overcome it.
The Roman Catholic Church position is very problematic. Matthew 16: 18 when read from the Greek language yields a different interpretation than in English! “…and I also tell you are Peter (πέτρος, petros) and on this rock (πέτρα, petra) I will build My church, and…” Greek nouns are gender specific.
The Roman Catholic defense to the above is where they will quote that in Aramaic the word “Peter” and “Rock” are spelled the same way “Kipha”. However the problem lies in the fact that the scripture was written in Greek not Aramaic. Why would the RCC say this? Jesus clearly said that the rock he would build his church on was the feminine “petra” not the masculine “petros”!
John 14: 6, 6 Jesus said to him, “I am the way, and the truth, and the life; no one comes to the Father but through Me.