Exodus 12:29-30

29Now it came about at 1midnight that 2the Lord struck all 3the 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 4cattle.

30And Pharaoh got up in the night, he and all his servants and all the Egyptians, and there was 5a great cry in Egypt, for there was no home where there was not someone dead.