Exodus 12:27-29

Authorized (King James) Version

²⁷ that ye shall say, It is the sacrifice of the Lord’s passover, who passed over the houses of the children of Israel in Egypt, when he smote the Egyptians, and delivered our houses. And the people bowed the head and worshipped. ²⁸ And the children of Israel went away, and did as the Lord had commanded Moses and Aaron, so did they.

²⁹ And it came to pass, that at midnight the Lord smote all the firstborn in the land of Egypt, from the firstborn of Pharaoh that sat on his throne unto the firstborn of the captive that was in the dungeon; and all the firstborn of cattle.