Judas Iscariot probably believed Jesus was the Jewish Messiah as a political figure and wanted to be “in” with him. As it became apparent he would not be a conquering Messiah (rather a suffering servant), he decided to cut his losses and side with the establishment. What may have torn it for him was when Mary “squandered” the expensive spikenard, anointing the feet of Jesus. His betrayal was expected by Jesus (because of prophesy) but the eleven never imagined it. When Jesus told them he would be betrayed by one of them, every one except Judas asked if it was them. Ahithophel, David’s counsellor is a picture of Judas, Judas is a picture of the antichrist. When Jesus saw Satan enter into Judas, he commanded him to leave because He wanted to protect His disciples and confide in them what was to come.