10 Then Judas Iscariot, one of the Twelve, went to the high priests to betray Him to them.
Mark 14:10 Cross References - Williams
Matthew 10:4
4 Simon the zealot, and Judas Iscariot, who afterward betrayed Him.
Matthew 26:14-16
Mark 3:19
19 and Judas Iscariot, who betrayed Him. Then He went home.
Luke 22:3-6
3 But Satan entered into Judas, who is called Iscariot, who belonged to the circle of the Twelve.
4 So he went off and discussed with the high priests and captains of the temple how he could betray Him to them.
5 They were delighted and made a bargain to pay him for it.
6 He in turn accepted their offer and began to seek a favorable opportunity to betray Him to them without exciting an uprising.
John 6:70-71
John 13:2
2 So Jesus, while supper was on -- although He knew that the devil had suggested to Judas Iscariot, Simon's son, to betray Him --
John 13:30
30 So as soon as he took the piece of bread, he left the room. It was then night.