God Kills all the First Born of Egypt

And at midnight the LORD killed all the firstborn sons in the land of Egypt, from the firstborn son of Pharaoh, who sat on the throne, to the firstborn son of the captive in the dungeon. Even the firstborn of their livestock were killed.  Pharaoh and his officials and all the people of Egypt woke up during the night, and loud wailing was heard throughout the land of Egypt. There was not a single house where someone had not died.  (Exodus 12:29-30 NLT)