Luke 22:1, 7

Now the Festival of Unleavened Bread, which is called the Passover, was approaching. [Lev 23:4, 5; Ezek 45:21; Matt 26:2-5; Mark 14:1, 2]

Then came the preparation day of Unleavened Bread on which the Passover lamb had to be sacrificed. [Ex 12:18-20; Deut 16:5-8; Matt 26:17-19; Mark 14:12-16]