God sent Moses and his brother Aaron to Pharaoh with a demand to let the Israelites go, but Pharaoh’s stubbornness led to a series of ten devastating plagues. These plagues demonstrated God’s superior power through events like water turning to blood, infestations of frogs and locusts, and total darkness. The final and worst plague was the death of every firstborn child, which the Israelites escaped by following God’s instruction to put a lamb’s blood on their doorposts. After this “Passover” night claimed his own son’s life, Pharaoh finally allowed the Israelites to leave, an event they were commanded to remember forever as God’s great deliverance.