²¹ The Lord said to Moses, “When you go ^[a]back to Egypt see that you perform before Pharaoh all ^(A)the wonders which I have put in your ^[b]power; but ^(B)I will harden his heart so that he will not let the people go.

^10 (A)Moses and Aaron performed all these wonders before Pharaoh; yet ^(B)the Lord ^[a]hardened Pharaoh’s heart, and he did not let the sons of Israel go out of his land.