Exodus 12:17-19

21st Century King James Version

¹⁷ And ye shall observe the Feast of Unleavened Bread, for in this selfsame day have I brought your armies out of the land of Egypt. Therefore shall ye observe this day in your generations by an ordinance for ever.

¹⁸ In the first month, on the fourteenth day of the month at evening, ye shall eat unleavened bread until the one and twentieth day of the month at evening.

¹⁹ Seven days shall there be no leaven found in your houses; for whosoever eateth that which is leavened, even that soul shall be cut off from the congregation of Israel, whether he be a stranger or born in the land.