Judas Iscariot
There are several explanations as to why Judas betrayed Jesus. In the earliest account, in the Gospel of Mark, when he goes to the chief priests to betray Jesus, he is offered money as a reward, but it is not clear that money is his motivation. In the Gospel of Matthew account, on the other hand, he asks what they will pay him for handing Jesus over. In the Gospel of Luke and the Gospel of John, the devil enters into Judas, causing him to offer to betray Jesus. The Gospel of John account has Judas complaining that money has been spent on expensive perfumes to anoint Jesus which could have been spent on the poor, but adds that he was the keeper of the apostles' purse and used to steal from it.
Judas Iscariot
During the 1970s, a Coptic papyrus codex (book) was discovered near Beni Masah, Egypt. It appeared to be a 3rd- or 4th-century-AD copy of a 2nd-century original, relating a series of conversations in which Jesus and Judas interact and discuss the nature of the universe from a Gnostic viewpoint. The discovery was given dramatic international exposure in April 2006 when the US "National Geographic" magazine published a feature article entitled "The Gospel of Judas" with images of the fragile codex and analytical commentary by relevant experts and interested observers (but not a comprehensive translation). The article's introduction stated: "An ancient text lost for 1,700 years says Christ's betrayer was his truest disciple." The article points to some evidence that the original document was extant in the 2nd century: "Around A.D. 180, Irenaeus, Bishop of Lyon in what was then Roman Gaul, wrote a massive treatise called "Against Heresies" [in which he attacked] a 'fictitious history,' which 'they style the Gospel of Judas.'"