Exodus 13:7-9

New Century Version

⁷ 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. ⁸ 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.’ ⁹ This feast will help you remember, like a mark on your hand or a reminder on your forehead. This feast will remind you to speak the Lord’s teachings, because the Lord used his great power to bring you out of Egypt.