Gospel of Judas

Mentioned by Irenaeus in his work Against Heresies (c. 180). This dates the book to no later than the mid-100s.
The book has an interesting twist: We did not have a copy until one was discovered in the 1970s in a papyrus codex (an early name for "book") known as Codex Tchacos. But scholars are divided on whether or not the Gospel of Judas that Irenaeus described in the late 100s is the same as the one discovered in the 1970s. Nevertheless, the description below relates to the copy discovered in the 1970s.

No. States at the beginning: "This is the secret message of judgment Jesus spoke with Judas Iscariot over a period of eight days, three days before he celebrated Passover."

Presents Judas as the only Apostle who understood Jesus. During the lengthy dialogue, Jesus takes Judas aside at different times to give him additional teachings. Other Apostles were present at various points in the narrative, but not when Jesus taught Judas.

Early in the book, Jesus challenged his Apostles to stand before him. Only Judas Iscariot could do so but had to turn his face after a short time. Jesus announced that Judas was from the immortal realm of Barbelo." "Barbelo" is the first (and often described as female) emanation or portrayal of the highest god in Gnosticism. This shows Judas' spiritual superiority over the other Apostles.
Jesus then separately teaches Judas the "secret mysteries," a core concept of Gnosticism, including a description of the spiritual world, such as aeons, luminaries, heavens (it mentions 72 heavens), and firmaments. Other Gnostic teachings are included.
Jesus says that he was not sent to everyone, but only to those who were upright. This is a Gnostic teaching: Not everyone is worthy of receiving the secret knowledge.
Jesus tells Judas that he will exceed the others because he will cause Jesus's death. The book ends quickly with Judas turning Jesus over to the scribes.