Lost in antiquity, rediscovered in 1896, and only recently accessible for study, The Secret Revelation of John offers a firsthand look into the diversity of Christianity before the establishment of canon and creed. Karen L. King offers an illuminating reading of this ancient text--a narrative of the creation of the universe and humanity and a guide to justice and salvation, said to be Christ's revelation to his disciple John.

Freeing the Revelation from the category of "Gnosticism" to which such accounts were relegated, King shows how the Biblical text could be read by early...