The pattern of Christianity it is traced in many Ancient Religions: We have Crishna(does it sound familiar with Christ!)He was born from a Virgin Mother, perfomed miracles, had 12 disciples, He was called the Light of The World, he was killed and reserructed after 3 days!!! The same story it is found in the Egyptian Religion with Horus, the Greek Religion with Adonis. We have at least 12-14 old ancient religions repeating the same pattern of Christianity...
The Gnostic Gospels were circulating the same era with the other Gospels. Then when the Orthodox Apostolic Church came with Bishop Athanasius and arranged the Biblical Cannon with the 76 Books, they rejected all the Gnostic Gospels, like the Gospel of Thomas, The Gospel of Judas, the Gospel of Mary Magdalene.(just to name a few). Specially the Gospel of Mary Magdalene, that clearly shows that in the Early Church, women had been Bishops and perfomed clergy duties among the first Christians. What was the reason not to accept it? Simply the just followed the Judaic system of priesthood and banned all women from having any clergy role at the Church...
Indeed there is a huge difference from the God(YHWH)of the Old Testament and Jesus. It seems like a childish God, that gets angry easyly, He is Jealous(I'm a Jealous God, you will worship no other God but Me). So how can a God be jealous and afraids from other God's that they are not even "true God's"? And what kind of God refuses for the first created Woman and Man the "knowledge of knowing good and bad"?
In the Gnostic Gospels we find a differend explanation than the Old Testament, regarding God. It describes that there are many Gods in different levels, and the God that Created this Universe, was not aware of the other levels that existed, higher than Him, and He became arrogant. That is why the other Gods. sent Jesus on Earth in order to fix the problems that they were created due to the arrogance and pride of the Creator of this World.
So in the start Christianity was so different. It had the Universal teaching of love, to share things with others, and most of all the Love Conquers all things. That is why Jesus was opposed to the Mosaic Law, He was opposed to the Scribes and Pharisees and their man made laws and actually seized that law with only one command: "Love your fellow person like your self". A complete different attitude from the God of the Old Testament that He required an Eye for an Eye..