Exodus 12:19-21

Darby Translation

¹⁹ Seven days shall there be no leaven found in your houses; for whoever eateth what is leavened—that soul shall be cut off from the assembly of Israel, whether he be a sojourner, or born in the land.

²⁰ Ye shall eat nothing leavened: in all your dwellings shall ye eat unleavened bread.

²¹ And Moses called all the elders of Israel, and said to them, Seize and take yourselves lambs for your families, and kill the passover.