15 He said to them, "But who do you say that I am?"
16 And Simon Peter answered and said, "Thou art the Christ, the Son of the living God."
17 And Jesus answered and said to him, "Blessed are you, Simon Barjona, because flesh and blood did not reveal this to you, but My Father who is in heaven.
18 "And I also say to you that you are Peter, and upon this rock I will build My church; and the gates of Hades shall not overpower it.
19 "I will give you the keys of the kingdom of heaven; and whatever you shall bind on earth shall be bound in heaven, and whatever you shall loose on earth shall be loosed in heaven." (Mat 16:15-19 NAS)
Upon what rock? Upon Peter? No. Is Yehoshua (Jesus) explaining that, upon the doctrine of the Trinity, he will build his church? No, it is built upon the fact that Yehoshua (Jesus) is the Christ the son of the living GOD no more no less. Did it say Trinity anywhere in there? The foundation that we must hold as Christians is that Yehoshua (Jesus) is the Christ the son of the living GOD, not a Trinity. The church has placed a false doctrine at its foundation, and it is not supposed to be the Trinity. It is upon the rock that Yehoshua (Jesus) is the Christ the son of the living GOD.