Thematic Bible: Passing over the first-born

"For I will go about in the land of Egypt this same night, and will smite all the firstborn in the land of Egypt, both of man and beast, and upon all the gods of Egypt will I the LORD do execution. And the blood shall be unto you a token, upon the houses wherein ye are; for when I see the blood, I will pass over you, and the plague shall not be upon you to destroy you, when I smite the land of Egypt.