Exodus 11:8-10

Revised Standard Version Catholic Edition

⁸ And all these your servants shall come down to me, and bow down to me, saying, ‘Get you out, and all the people who follow you.’ And after that I will go out.” And he went out from Pharaoh in hot anger. ⁹ Then the Lord said to Moses, “Pharaoh will not listen to you; that my wonders may be multiplied in the land of Egypt.”

¹⁰ Moses and Aaron did all these wonders before Pharaoh; and the Lord hardened Pharaoh’s heart, and he did not let the people of Israel go out of his land.