Exodus 11:8-10

Amplified Bible

⁸ All these servants of yours will come down to me and bow down before me, saying, ‘Get out, you and all the people who follow you.’ After that I will leave.” And he left Pharaoh in the heat of anger.

⁹ Then the Lord said to Moses, “Pharaoh will not listen to you, so that My wonders (miracles) may be multiplied in the land of Egypt.” ¹⁰ Moses and Aaron did all these wonders (miracles) before Pharaoh; yet the Lord hardened Pharaoh’s heart, and he did not let the Israelites go out of his land.