Mark 14:10
But Judas Iscariot, already mentioned as one of the Twelve, went to the High Priests to betray Jesus to them.
John 13:2
While supper was proceeding, the Devil having by this time suggested to Judas Iscariot, the son of Simon, the thought of betraying Him, Jesus,
Matthew 26:14-16
At that time one of the Twelve, the one called Judas Iscariot, went to the High Priests
Luke 22:3-6
Satan, however, entered into Judas (the man called Iscariot)
Matthew 10:4
Simon the Cananaean, and Judas the Iscariot, who also betrayed Him.
John 13:30
So Judas took the piece of bread and immediately went out. And it was night.
Mark 3:19
and Judas Iscariot, the man who also betrayed Him.
John 6:70-71
"Did not I choose you--the Twelve?" said Jesus, "and even of you one is a devil."