I cannot make you believe me because you are too deeply rooted in the respectable book that is the Bible.
Christ teachings? Jesus (peace be upon him) preached not his teachings but of God.
True Jesus(peace be upon him) did give us a message that could not be improved upon, this i believe. But enforced is of a different matter. When people had taken Jesus (peace be upon him) and said that the messenger was God, Muhammad and Islam came to set people to the straight path. Of course i cannot get you to believe, for that is impossible. That is your belief and I have my own.
"Believer are those who say "Our Lord is God" and remain firm on that Path on them shall be no fear nor shall they grieve."
That Path for many has been forsaken for it is now Our Lord is Jesus