Luke 22:4

And he went his way, and communed with the chief priests and captains, how he might betray him unto them.

Cross-reference

Luke 22:52 shows the same chief priests and temple officers later arresting Jesus — the fulfillment of the conspiracy hatched here.

Matthew 26:14 records Judas going to the chief priests to betray Jesus — a direct parallel account of the same action.

Mark 14:10 parallels Judas going to the chief priests to betray him — another synoptic account of the same event.

Mark 14:11 records the same response — the chief priests' gladness and promise of money to Judas — a parallel account of the conspiracy.