NET
10 So Moses and Aaron did all these wonders before Pharaoh, but the Lord hardened Pharaoh’s heart, and he did not release the Israelites from his land.
Darby
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.
KJV
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.