Matthew 26:14

Then one of the twelve, who was named Judas Iscariot, went to the chief priests and said,

Matthew 10:4

Simon the Zealot, and Judas Iscariot, who was false to him.

Luke 22:3-6

And Satan came into Judas Iscariot, who was one of the twelve.

John 13:2

So while a meal was going on, the Evil One having now put it into the heart of Judas Iscariot, Simon's son, to be false to him,

John 13:30

So Judas, having taken the bit of bread, straight away went out: and it was night.

Matthew 26:25

And Judas, who was false to him, made answer and said, Is it I, Master? He says to him, Yes.

Matthew 26:47

And while he was still talking, Judas, one of the twelve, came, and with him a band armed with swords and sticks, from the chief priests and those in authority over the people.

Matthew 27:3

Then Judas, who was false to him, seeing that he was to be put to death, in his regret took back the thirty bits of silver to the chief priests and those in authority,

Mark 14:10-11

And Judas Iscariot, who was one of the twelve, went away to the chief priests, so that he might give him up to them.

John 6:70-71

Then Jesus said, Did I not make a selection of you, the twelve, and one of you is a son of the Evil One?

John 12:4

But one of his disciples, Judas Iscariot (who was to give him up), said,

John 18:2

And Judas, who was false to him, had knowledge of the place because Jesus went there frequently with his disciples.

Acts 1:16

My brothers, the word of God had to be put into effect, which the Holy Spirit had said before, by the mouth of David, about Judas, who was guide to those who took Jesus,

Treasury of Scripture Knowledge

Summary

Then one of the twelve, called Judas Iscariot, went unto the chief priests,

Bible References

One

Mark 14:10
And Judas Iscariot, who was one of the twelve, went away to the chief priests, so that he might give him up to them.
Luke 22:3
And Satan came into Judas Iscariot, who was one of the twelve.
John 13:2
So while a meal was going on, the Evil One having now put it into the heart of Judas Iscariot, Simon's son, to be false to him,

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain