Deuteronomy 16:1-3

World English Bible

16 Observe the month of Abib, and keep the Passover to Yahweh your God; for in the month of Abib Yahweh your God brought you out of Egypt by night. ² You shall sacrifice the Passover to Yahweh your God, of the flock and the herd, in the place which Yahweh shall choose to cause his name to dwell there. ³ You shall eat no leavened bread with it. You shall eat unleavened bread with it seven days, even the bread of affliction (for you came out of the land of Egypt in haste) that you may remember the day when you came out of the land of Egypt all the days of your life.