15 And it came to pass, when Pharaoh was stubborn about letting us go, that the Lord killed all the firstborn in the land of Egypt, both the firstborn of man and the firstborn of beast. Therefore I sacrifice to the Lord all males that open the womb, but all the firstborn of my sons I redeem.'
15
When Pharaoh stubbornly refused to let us go, the LORD killed the firstborn of both people and animals in Egypt. This is why I sacrifice to the LORD the first male offspring of every womb and redeem each of my firstborn sons.’