Origen of Alexandria says; "Look at Peter, the great foundation of the Church, that most solid of rocks, upon whom Christ built the Church." (Homilies on Exodus 5:4) A.D. 249 Tatian The Syrian says; "Simon Cephas answered and said, (you are the Messiah, the Son of the living God). Jesus answered and said to unto him, (Blessed are you, Simon son of Jonah: flesh and blood has not revealed it unto thee, but my Father which is in Heaven. And I say unto thee also, that you are Cephas, and on this rock I will build my church; and the gates of Hades shall not prevail against it." (Diatesseron 23) A.D. 170 - a little over 20 years after the bible was canonized. Whose words am I gonna believe? You or the ones that were there from the beginning? Look in Titian's writing..he uses "Cephas" which means "rock". Just as "petra" means rock.