Exodus 13:2-3

2“1Sanctify to Me every firstborn, the firstborn of every womb among the sons of Israel, among people and animals alike; it belongs to Me.”

3And Moses said to the people, “2Remember this day in which you departed from Egypt, from the house of 3slavery; for 4by 5a powerful hand the Lord brought you out from this place. 6And nothing with yeast shall be eaten.