Exodus 10:20

And the Lord hardened the heart of Pharaoh; neither did he release the sons of Israel

Other versions

King James Version

But the LORD hardened Pharaoh's heart, so that he would not let the children of Israel go.

English Standard Version

But the LORD hardened Pharaoh's heart, and he did not let the people of Israel go.

New International Version

But the LORD hardened Pharaoh's heart, and he would not let the Israelites go.