Mark 14:1-2
1 It was now two days before the festival of the Passover and of Unleavened Bread. And the high priests and scribes were casting about for a way to arrest him by stealth and put him to death, 2 for they said, "It must not be during the festival, or there may be a riot."
Luke 22:1-2
1 The festival of Unleavened Bread, which is called the Passover, was approaching. 2 And the high priests and the scribes were casting about for a way to put him to death, for they were afraid of the people.