It really doesn’t matter what language Jesus spoke your Bible clearly states that Jesus is the ROCK, Cornerstone, and the Truth and all others are servants to his Majesty.
1 Corinthians 3:11 New Revised Standard Version Catholic Edition (NRSVCE)
11 For no one can lay any foundation other than the one that has been laid; that foundation is Jesus Christ.
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.