The Lost Gospel: Decoding the Ancient Text that Reveals Jesus' Marriage to Mary the Magdalene

The Lost Gospel: Decoding the Ancient Text that Reveals Jesus' Marriage to Mary the Magdalene is a book published by investigative journalist Simcha Jacobovici and New Testament scholar Barrie Wilson in 2014. It contends that the 6th century manuscript commonly referred to as "Joseph and Aseneth" is really a disguised history.

The authors claim that it is a Christian rather than a Jewish text on the grounds that it is prefaced by two letters indicating that the work contains "a hidden meaning"; that it was preserved and transmitted in the eastern Christian context of Syriac Christianity; and that it would be of no interest to monks if it were merely the story of an interracial marriage set in Patriarchal times. Decoded with Joseph as Jesus and Aseneth as 'Mary the Magdalene', the narrative is interpreted as the story of their marriage, the children they had and a plot against their lives.

It is also speculated that the writing portrays an early form of Christianity that paralleled the Jewish movement led by James (Jesus’ brother), and that this movement may have paved the way for 2nd century Gnosticism.