As Christianity began to differentiate itself from Judaism, there came a split between the various factions. The group around James and that around Mary lost out in the struggle and were submerged by the Pauline factions of newer apostles. Much from that period has been lost and it is only now beginning to come to light.
Does the initial question in this thread actually revolve around the creation of Christianity and do we need to be looking at what became of Thomas, James, Mary and the other early leaders in the church as well as the advent of the Pauline, John influence?
Of course, you will then resort to your belief that the Bible was written by man and that humans made up all of this! I like the idea that God has revealed a bit more of Himself to each generation throughout History. Comments?
Not quite. I will resort to the actual evidence instead of my belief and let the conclusion be determined by the evidence not what I like.
The whole "the Jews rejected God's offer" gambit only makes the God character small and picayune; petty and mean.