Matthew 27:3

Then Judas, who betrayed him, seeing that Jesus was condemned, repented of what he had done, and returned the thirty pieces of silver to the Chief Priests and Councillors.

Matthew 26:14-16

It was then that one of the Twelve, named Judas Iscariot, made his way to the Chief Priests,

Matthew 26:47-50

And, while he was still speaking, Judas, who was one of the Twelve, came in sight; and with him was a great crowd of people, with swords and clubs, sent from the Chief Priests and Councillors of the Nation.

Mark 14:10-11

After this, Judas Iscariot, one of the Twelve, went to the Chief Priests, to betray Jesus to them.

Mark 14:43-46

And just then, while he was still speaking, Judas, who was one of the Twelve, came up; and with him a crowd of people, with swords and clubs, sent by the Chief Priests, the Teachers of the Law, and the Councillors.

Luke 22:2-6

The Chief Priest and the Teachers of the Law were looking for an opportunity of destroying Jesus, for they were afraid of the people.

Luke 22:47-48

While he was still speaking, a crowd appeared in sight, led by the man called Judas, who was one of the Twelve. Judas approached Jesus, to kiss him;

John 13:2

The Devil had already put the thought of betraying Jesus into the mind of Judas Iscariot, the son of Simon;

John 13:27

And it was then, after he had received it, that Satan took possession of him. So Jesus said to him: "Do at once what you are going to do."

John 18:3

So Judas, who had obtained the soldiers of the Roman garrison, and some police-officers from the Chief Priests and the Pharisees, came there with lanterns, torches, and weapons.

2 Corinthians 7:10

For, when sorrow is in accordance with God's will, it results in a repentance leading to Salvation, and which will never be regretted. The sure result of the sorrow that the world knows is Death.

Treasury of Scripture Knowledge

Summary

Then Judas, which had betrayed him, when he saw that he was condemned, repented himself, and brought again the thirty pieces of silver to the chief priests and elders,

General references

Bible References

Repented

2 Corinthians 7:10
For, when sorrow is in accordance with God's will, it results in a repentance leading to Salvation, and which will never be regretted. The sure result of the sorrow that the world knows is Death.

General references

Mark 6:26
The King was much distressed; yet, on account of his oath and of the guests at his table, he did not like to refuse her.
Luke 14:30
And say 'Here is a man who began to build and was not able to finish!'