Luke 22:1-6 New Revised Standard Version (NRSV)
The Plot to Kill Jesus
22 Now the festival of Unleavened Bread, which is called the Passover, was near. 2 The chief priests and the scribes were looking for a way to put Jesus[a] to death, for they were afraid of the people.
3 Then Satan entered into Judas called Iscariot, who was one of the twelve; 4 he went away and conferred with the chief priests and officers of the temple police about how he might betray him to them. 5 They were greatly pleased and agreed to give him money. 6 So he consented and began to look for an opportunity to betray him to them when no crowd was present.