17. You shall observe the Feast of Unleavened Bread. For on this very day I brought your armies out of the land of Egypt. Therefore you shall observe this day throughout your generations as an ordinance forever.
18. In the first month, on the fourteenth day of the month at evening, you shall eat unleavened bread until the twenty-first day of the month at evening.
19. Seven days shall there be no leaven found in your houses, for whoever eats that which is leavened, that person shall be cut off from the congregation of Israel, whether he be a stranger or born in the land.
20. You shall eat nothing leavened. In all your dwellings you shall eat unleavened bread.
21. Then Moses called for all the elders of Israel and said to them, “Draw out and take for yourselves a lamb according to your families and kill the Passover lamb.
22. You shall take a bunch of hyssop, and dip it in the blood that is in the basin, and apply the lintel and the two side posts with the blood that is in the basin, and none of you shall go out from the door of his house until the morning.
23. For the Lord will pass through to kill the Egyptians. And when He sees the blood upon the lintel and on the two side posts, the Lord will pass over the door and will not permit the destroyer to come to your houses to kill you.