Exodus 12:23-30

23For 1the Lord will pass through to strike the Egyptians; but when He sees the blood on the lintel and on the two doorposts, the Lord will pass over the door and will 2not allow the 3destroyer to come in to your houses to strike you. 24And 4you shall keep this event as an ordinance for you and your children forever. 25When you enter the land which the Lord will give you, as He has 5promised, you shall keep this 6rite. 267And when your children say to you, ‘8What does this rite mean to you?’ 27then you shall say, ‘It is a Passover sacrifice to 9the Lord because He passed over the houses of the sons of Israel in Egypt when He struck the Egyptians, but 10spared our homes.’” 11And the people bowed low and worshiped.

28Then the sons of Israel went and did so; just as the Lord had commanded Moses and Aaron, so they did.

29Now it came about at 12midnight that 13the Lord struck all 14the firstborn in the land of Egypt, from the firstborn of Pharaoh who sat on his throne to the firstborn of the captive who was in the dungeon, and all the firstborn of 15cattle. 30And Pharaoh got up in the night, he and all his servants and all the Egyptians, and there was 16a great cry in Egypt, for there was no home where there was not someone dead.