Israel from Egypt to the Promised Land. When first confronted by Moses, Pharaoh refused to let the people go. After sending nine plagues, the Lord said the firstborn males of every house would die unless the doorframe of that house was covered with the blood of a perfect lamb. That night, the Lord “passed over” the homes with blood on the doorframes. The tenth plague brought death to the firstborn sons of Egypt, even taking the life of Pharaoh’s own son. Finally, Pharaoh let the children of Israel go.