26 Jesus therefore answered, “It is he to whom I will give this piece of bread when I have dipped it.” So when he had dipped the piece of bread, he gave it to Judas, the son of Simon Iscariot.
John 13:26 Cross References - WEB
Matthew 26:23
23 He answered, “He who dipped his hand with me in the dish will betray me.
Mark 14:19-20
Luke 22:21
21 But behold, the hand of him who betrays me is with me on the table.
John 6:70-71
John 12:4-6
4 Then Judas Iscariot, Simon’s son, one of his disciples, who would betray him, said,
5 “Why wasn’t this ointment sold for three hundred denarii, and given to the poor?”
6 Now he said this, not because he cared for the poor, but because he was a thief, and having the money box, used to steal what was put into it.
John 13:30
30 Therefore having received that morsel, he went out immediately. It was night.