Mark 14:1-2
1 Now two days later was the feast of the Passover and of Unleavened Bread. Both the chief priests and the Scribes were continually seeking how they might arrest him by a stratagem and kill him; 2 but, "Not on a feast-day," they said, "for fear there should be a riot among the people."
Luke 22:1-2
1 Now the festival of Unleavened Bread, which is called the Passover, was drawing near. 2 The high priest and the Scribes continually sought means to put him to death.