Mark 14:1-2
1 After two days was the passover and the feast of unleavened bread; and the chief priests and the scribes sought how they might take him by craft, and kill him. 2 But they said: Not during the feast, lest there be a tumult of the people.
Luke 22:1-2
1 Now the feast of unleavened bread, which is called the passover, was at hand. 2 And the chief priests and the scribes sought how they might kill him; for they feared the people.