Cross reference
John 13:26
26 Jesus therefore answereth, He it is, for whom I shall dip the sop, and give it him. So when he had dipped the sop, he taketh and giveth it to Judas, `the son' of Simon Iscariot.
Matthew 26:23
23 And he answered and said, He that dipped his hand with me in the dish, the same shall betray me.
Mark 14:19-20
19 They began to be sorrowful, and to say unto him one by one, Is it I?
20 And he said unto them, `It is' one of the twelve, he that dippeth with me in the dish.
Luke 22:21
21 But behold, the hand of him that betrayeth me is with me on the table.
John 6:70-71
70 Jesus answered them, Did not I choose you the twelve, and one of you is a devil?
71 Now he spake of Judas `the son' of Simon Iscariot, for he it was that should betray him, `being' one of the twelve.
John 12:4-6
4 But Judas Iscariot, one of his disciples, that should betray him, saith,
5 Why was not this ointment sold for three hundred shillings, and given to the poor?
6 Now this he said, not because he cared for the poor; but because he was a thief, and having the bag took away what was put therein.
John 13:30
30 He then having received the sop went out straightway: and it was night.