Mark 14:20

but he answered them, saying, it is one of the twelve, he that eats of the same mess with me.

John 13:26

Jesus answered, he it is, to whom I shall give a sop, when I have made it. and when he had made the sop, he gave it to Judas Iscariot, the son of Simon.

Matthew 26:23

to this he answered, he that has his hand in the dish with mine, he it is that will betray me.

Matthew 26:47

And before he had done speaking, Judas one of the twelve appear'd, with a numerous retinue, arm'd with swords and staves, being sent by the chief priests and elders of the people.

Mark 14:43

All of a sudden, while he was yet speaking, appear'd Judas, one of the twelve, attended by a great number of people with swords and clubs, who were sent by the chief priests, the Scribes, and rulers.

Luke 22:47

Before he had done speaking, the company appears, Judas one of the twelve marching in front, who advanc'd to Jesus to give him a kiss.

John 6:71

meaning Judas Iscariot the son of Simon: for he it was that would betray him, altho' he was one of the twelve.

Treasury of Scripture Knowledge

Summary

And he answered and said unto them, It is one of the twelve, that dippeth with me in the dish.

General references

Bible References

It is

Mark 14:43
All of a sudden, while he was yet speaking, appear'd Judas, one of the twelve, attended by a great number of people with swords and clubs, who were sent by the chief priests, the Scribes, and rulers.
Matthew 26:47
And before he had done speaking, Judas one of the twelve appear'd, with a numerous retinue, arm'd with swords and staves, being sent by the chief priests and elders of the people.
Luke 22:47
Before he had done speaking, the company appears, Judas one of the twelve marching in front, who advanc'd to Jesus to give him a kiss.
John 6:71
meaning Judas Iscariot the son of Simon: for he it was that would betray him, altho' he was one of the twelve.

Dippeth

Matthew 26:23
to this he answered, he that has his hand in the dish with mine, he it is that will betray me.
John 13:26
Jesus answered, he it is, to whom I shall give a sop, when I have made it. and when he had made the sop, he gave it to Judas Iscariot, the son of Simon.

General references

Matthew 26:22
at which they were exceedingly concern'd, and began every one of them to ask, Lord, is it I?