The Gospels provide no clear religious or political rationale for Judas betrayal. Matthew suggested that his motive was simply greed by describing how he bargained with the chief priests for 30 pieces of silver the recompense that the Torah required for the accidental killing of a slave. Mark and Luke, however, indicated that chief priests were the ones who first made the offer of money. John wrote that during Jesus ministry Judas held the trusted position of treasurer for the twelve, and John accused him of stealing their funds. But when he wrote of the betrayal, John did not mention money.
For Luke and John, Judas personal motives were less important than the assertion that it was Satan that brought about the betrayal. Still important for the Gospel writers was the fact that Gods will determined the manner of Jesus death (Mark 14:21). John indicated that the disciples suspected nothing when Judas quickly left the Last Supper to prepare for Jesus arrest.
When the moment of arrest came, Judas led a large group to the garden of Gethsemane on the Mount of Olives. Since Jesus was a public figure, it is unlikely that Judas kiss was needed to identify Jesus. Matthew, Mark, and Luke portray Judas leading a crowd of Jews, including many who had heard Jesus teach in the temple (Mark 14:43-49). On the other hand, John described Judas leading Jewish officers and a band of soldiers. The term John used indicates a company of Roman troops.
What became of Judas? The New Testament provides two accounts. Matthew reported that he repented, returned the money, and in deep remorse went out and hanged himself. The priests used the tainted money to buy a burial ground for foreigners, a potters field called the Field of Blood (Matthew 27:3-10)
The Book of Acts recorded that Judas himself bought a field with the money and falling headlong he burst open in the middle and all his bowels gushed out so that his field was called Field of Blood (Acts 1:18-19). From his beginning to his horrible end, the dark character of Judas Iscariot remains an enigma.