Exodus 12:21–28

²¹Then Moses summoned all the elders of Israel and said to them, “Go, select an animal from the flock according to your families, and slaughter the Passover animal. ^d22Take a cluster of hyssop, dip it in the blood ^ethat is in the basin, and brush the lintel and the two doorposts with some of the blood in the basin. None of you may go out the door of his house until morning. ²³When the Lord passes through to strike Egypt and sees the blood on the lintel and the two doorposts, He will pass over the door and not let the destroyer enter your houses to strike you. ^f

²⁴“Keep this command permanently as a statute for you and your descendants. ²⁵When you enter the land that the Lord will give you as He promised, you are to observe this ritual. ²⁶When your children ^gask you, ‘What does this ritual mean to you?’ ²⁷you are to reply, ‘It is the Passover sacrifice ^hto the Lord, for He passed over the houses of the Israelites in Egypt when He struck the Egyptians and spared our homes.’ ” So the people bowed down and worshiped. ²⁸Then the Israelites went and did this; they did just as the Lord had commanded Moses and Aaron.