Exodus 13:1-8

Then the LORD said to Moses, “Give every firstborn male to me. Every firstborn male among the Israelites belongs to me, whether human or animal.” Moses said to the people, “Remember this day, the day you left Egypt. You were slaves in that land, but the LORD with his great power brought you out of it. You must not eat bread made with yeast. Today, in the month of Abib, you are leaving Egypt. The LORD will lead you to the land of the Canaanites, Hittites, Amorites, Hivites, and Jebusites. This is the land he promised your ancestors he would give you, a fertile land. There you must celebrate this feast during the first month of every year. For seven days you must eat bread made without yeast, and on the seventh day there will be a feast to honor the LORD. So for seven days you must not eat any bread made with yeast. There must be no bread made with yeast anywhere in your land. On that day you should tell your son: ‘We are having this feast because of what the LORD did for me when I came out of Egypt.’