The Gnostic Gospels

This is a great primer and introduction to gnostic theology, and an even better socio-cultural critique of the early church. She makes the argument that Gnosticism didn't die out because, as some would claim, “it just didn't have enough going for it,” but because its theology was not consistent with the doctrines of papal and clergy authority. The bishops, seeing that their authority was being undermined, branded the gnostics heretics – not out of any actual heresies (they were not Marcionites!), but to ensure their power over the christian community.

But, as I said, this book is more of a primer than an authoritative work on the beliefs of the gnostics. It is a very fun and informative read, and I recommend it thoroughly to people interested in the history of early Christianity. But if you are looking for a book that is more indepth concerning the faith and beliefs of Gnosticism, this one does not suffice.