No Jesus was not the devil! The gospel of Judas was not saying that at all. Barbelo in Sethian Gnosticism was the feminine side of the (Good) high creator god. To these people, Sophia was the emanation of the feminine side on the second level, the level of the demiuge. That is why in the Gospel of Judas, they could talk about 'corruptible sophia!' It is based on a Platonic metaphysics and an interpretation of some texts in the Jewish Scriptures. It is amazing. Charles posted some excellent sources on Sethian Gnosticism. I am reading them right now.
There is a whole scholastic literature on the gnostics that I am just reviewing right now. Obviously I have not kept up!
Sorry for the questionable statements.
© Charles N. Pope, US Library of Congress. All rights reserved.