John 12:4

12:4 But Judas Iscariot, one of his disciples (the one who was going to betray him) said,

John 13:2

13:2 The evening meal was in progress, and the devil had already put into the heart of Judas Iscariot, Simon’s son, that he should betray Jesus.

John 14:22

14:22 “Lord,” Judas (not Judas Iscariot) said, “what has happened that you are going to reveal yourself to us and not to the world?”

John 18:2-3

18:2 (Now Judas, the one who betrayed him, knew the place too, because Jesus had met there many times with his disciples.) 18:3 So Judas obtained a squad of soldiers and some officers of the chief priests and Pharisees. They came to the orchard with lanterns and torches and weapons.

John 18:5

18:5 They replied, “Jesus the Nazarene.” He told them, “I am he.” (Now Judas, the one who betrayed him, was standing there with them.)

John 13:29

13:29 Some thought that, because Judas had the money box, Jesus was telling him to buy whatever they needed for the feast, or to give something to the poor.)