For I will pass through the land of Egypt this night and will smite all the firstborn in the land of Egypt, both man and beast, and against all the gods of Egypt I will execute judgment. I am the Lord.
And when Pharaoh stubbornly refused to let us go, the Lord killed all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of beast. Therefore, I sacrifice to the Lord the first male offspring of every womb, but all the firstborn of my sons I redeem.’