Exodus 13:5-7

King James Version

⁵ And it shall be when the Lord shall bring thee into the land of the Canaanites, and the Hittites, and the Amorites, and the Hivites, and the Jebusites, which he sware unto thy fathers to give thee, a land flowing with milk and honey, that thou shalt keep this service in this month.

⁶ Seven days thou shalt eat unleavened bread, and in the seventh day shall be a feast to the Lord.

⁷ Unleavened bread shall be eaten seven days; and there shall no leavened bread be seen with thee, neither shall there be leaven seen with thee in all thy quarters.