Exodus 11:10 in the World English Bible
Moses and Aaron did all these wonders before Pharaoh, but the LORD hardened Pharaoh’s heart, and he didn’t let the children of Israel go out of his land.
Context
9 And the LORD said unto Moses, Pharaoh shall 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 the LORD hardened Pharaoh’s heart, so that he would not let the children of Israel go out of his land.