20 But the Lord hardened Pharaoh's heart, and he did not let the children of Israel go.
20 But the Lord hardened Pharaoh's heart, and he would not let the Israelites go.
20 But the Lord hardened Pharaoh's heart, so that he would not let the children of Israel go.
20 And Jehovah made Pharaoh's heart stubborn, and he did not let the children of Israel go.