Quote from damir00:
the dozens of gospels not included by the Niceans but used by gnostic c'ians.
While it's true that the gnostic "Christians" can be traced back very early in church history, I want to point out a few of their teachings. I am doing this not because I think that you are unfamiliar with them, but to make a point at the end:
1. The virgin birth and resurrection of Jesus were not literal, physical events but representations of higher truths. (The Gospel of Philip)
2. Jesus was a spirit being who only appeared human. He did not suffer pain, die on the cross or rise from the dead. (The Coptic Apolcalypse of Peter)
3. Creation is evil. Most gnostics taught that the God of the Old Testament, who created the world, is not the Supreme Being. Instead he is a less god and everything he created is evil. (Testimony of Truth, for example, portrays the creator as a villain and The Gospel of the Egyptians says that one should "trample the shameful garment", i.e. the body which was regarded as inferior or even evil.)
4. Jesus speaks of illusion and enlightenment not sin and repentance. Jesus is more of a guide than an Savior. (The Gospel of Thomas)
5. There is knowledge available to immature outsiders (ordinary Christians) and esoteric knowledge available only to insiders (the gnostics). (The Gospel of Philip) The Epistle to the Apostles explains that Jesus provided secret, true teachings to the followers that differed significantly from his standard, public teaching.
6. Gnostics taught that once the student could become the master, i.e. equal with Jesus once he or she achieved spiritual understanding. (The Gospel of Thomas for example has Jesus saying: "I am not your master...He who will drink from my mouth will become as I am: I myself shall become he, and the things that are hidden will be revealed to him.")
7. The goal is to know oneself. (The Gospel of Thomas has Jesus saying, "The kingdom of God is within you and outside of you: once you come to know yourselves, you will become known.")
Here's my point: like the extrabiblical writings of Joseph Smith, these have much more in common with Eastern thought and the occult. In other words, these teachings clearly contradict what is today regarded as New Testament canon.
Would you not agree that the gnostic presentation of the gospel was SO different that it required a choice? You could not really live in both worlds - the views are simply too contrasting...