Exodus 10:25-27

Living Bible

²⁵ “No,” Moses said, “we must take our flocks and herds for sacrifices and burnt offerings to Jehovah our God. ²⁶ Not a hoof shall be left behind; for we must have sacrifices for the Lord our God, and we do not know what he will choose until we get there.”

²⁷ So the Lord hardened Pharaoh’s heart and he would not let them go.