What does the Bible say about the betrayal of Jesus by Judas Iscariot?

The betrayal of Jesus by Judas Iscariot is documented in the Gospels, particularly in Matthew 26:14-16 and 27:3-10, where it describes Judas going to the chief priests to negotiate the betrayal for 30 pieces of silver. This act is significant as it fulfills the prophecy in Zechariah 11:12, where the price of the 'goodly' shepherd, the Messiah, is deemed a contemptible sum. Judas's actions demonstrate the depths of betrayal that can occur even from within the closest circle of followers, illustrating the theme of rejection found throughout Scripture.