Hey, if you thought the plagues were bad, get ready for the tenth plague! In Exodus 11, God tells Moses that he's gonna send the angel of death to go through all the firstborns of Egypt and kill 'em! They'll be spared only if they mark their doorposts with the blood of a lamb. And sure enough, the angel of death comes and kills all the firstborns, from the Pharaoh's son on down. They got what was comin' to 'em. But the Israelites, they were safe, so they got to pack up their bags and head out of Egypt for good. So, if you're ever wondering why Jews celebrate Passover each year, now you know.