Exodus 11:8-10

Darby Translation

⁸ And all these thy bondmen shall come down unto me, and bow down to me, saying, Go out, thou, and all the people that follow thee; and after that I will go out. And he went out from Pharaoh in a glowing anger.

⁹ And Jehovah had said to Moses, Pharaoh shall not hearken to you; that my wonders may be multiplied in the land of Egypt.

¹⁰ And Moses and Aaron did all these wonders before Pharaoh; but Jehovah made Pharaoh's heart stubborn, and he did not let the children of Israel go out of his land.