Exodus 11:8-10

American Standard Version

⁸ And all these thy servants shall come down unto me, and bow down themselves unto me, saying, Get thee out, and all the people that follow thee: and after that I will go out. And he went out from Pharaoh in hot anger.

⁹ And Jehovah said unto Moses, Pharaoh will not hearken unto you; that my wonders may be multiplied in the land of Egypt. ¹⁰ And Moses and Aaron did all these wonders before Pharaoh: and Jehovah ^[a]hardened Pharaoh’s heart, and he did not let the children of Israel go out of his land.