Exodus 11:9-10
Exodus 11:9-10 AMP
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.” 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.