²¹ The Lord instructed Moses, “When you go back to Egypt, make sure you do before Pharaoh all the wonders that I have put within your power. But I will harden his heart^[a](A) so that he won’t let the people go.

¹⁰ Moses and Aaron did all these wonders before Pharaoh, but the Lord hardened Pharaoh’s heart,^(A) and he would not let the Israelites go out of his land.