Exodus 13:5-7

Revised Standard Version

⁵ And when the Lord brings you into the land of the Canaanites, the Hittites, the Amorites, the Hivites, and the Jeb′usites, which he swore to your fathers to give you, a land flowing with milk and honey, you shall keep this service in this month. ⁶ Seven days you shall eat unleavened bread, and on the seventh day there shall be a feast to the Lord. ⁷ Unleavened bread shall be eaten for seven days; no leavened bread shall be seen with you, and no leaven shall be seen with you in all your territory.