"The one indispensable book for the understanding of Gnosis and Gnosticism."--Harold Bloom

This definitive introduction to the gnostic scriptures provides a crucial look at the theology, religious atmosphere, and literary traditions of ancient Christianity and Hellenistic Judaism. It provides authoritative translations of ancient texts from Greek, Latin, and Coptic, with introductions, bibliographies, and annotations. The texts are organized to reflect the history of gnosticism in the second through fourth century CE. This second edition provides updates throughout and adds three new ancient texts, including the recently discovered Gospel of Judas.