Band on the Run
You lucky son of a gun. I would have given my eye teeth to have studied under Ms. Pagels. Her book on Eden started me on my path to being a Gnostic Christian.
I believe that the sequence of how Gnostic Christianity came to be goes like this. Although I don't know if we can prove it for sure this far up the time line. It may not matter too much as we have evolved away from some of our older beliefs.
I see the Jewish Kabalists and Universalist Catholics as friendly to each other as we both recognized Eden as man's elevation and not the fall that Christianity later put to it. We were both rather proud sects and Rome had no use for those who did not like to kowtow to tyranny the way they could get the church that Constantine bought to do. Gnostic Christianity thus predated the Christianity and Catholicism we know today.
As to the actual scriptures you seem to want to put authority in, please remember that, according to Karen Armstrong, Gnostic Christians and Jews used to change the wording and position of word in scriptures all the time. We both saw scriptures as being written, not to be literally believed, but just to open dialog about God. They sought God and were not idol worshipers like those who thought they had found a Godinabook like Christian idol worshipers do even today.
Regards
DL