Exodus 12:42; Deuteronomy 16:3

42 It was a night of watching by the Lord, to bring them out of the land of Egypt; so this same night is a enight of watching kept to the Lord by all the people of Israel throughout their generations.

You shall eat no leavened bread with it. mSeven days you shall eat it with unleavened bread, the bread of afflictionfor you came out of the land of Egypt nin hastethat all the days of your life you may remember the day when you came out of the land of Egypt.