Mark 14:10, 11, 33
Mark 14:10 ESV
Then Judas Iscariot, who was one of the twelve, went to the chief priests in order to betray him to them.
Mark 14:11 ESV
And when they heard it, they were glad and promised to give him money. And he sought an opportunity to betray him.
Mark 14:33 ESV
And he took with him Peter and James and John, and began to be greatly distressed and troubled.