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.
Gospel of Judas
Like the canonical gospels, the Gospel of Judas portrays the scribes as approaching Judas with the intention of arresting him, and Judas receiving money from them after handing Jesus over to them. But unlike Judas in the canonical gospels, who is portrayed as a villain, and excoriated by Jesus ("Alas for that man by whom the Son of Man is betrayed. It would be better for that man if he had never been born," trans. "The New English Bible") ; , the Judas gospel portrays Judas as a divinely appointed instrument of a grand and predetermined purpose. "In the last days they will curse your ascent to the holy (generation)."