Exodus 11:8-10

New Revised Standard Version, Anglicised Catholic Edition

⁸ Then all these officials of yours shall come down to me, and bow low to me, saying, “Leave us, you and all the people who follow you.” After that I will leave.’ And in hot anger he left Pharaoh.

⁹ The Lord said to Moses, ‘Pharaoh will not listen to you, in order that my wonders may be multiplied in the land of Egypt.’ ¹⁰ Moses and Aaron performed all these wonders before Pharaoh; but the Lord hardened Pharaoh’s heart, and he did not let the people of Israel go out of his land.