Parallel
Exodus 11:10
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
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.
Moses and Aaron did all these wonders before Pharaoh, but the LORD hardened (note: Or stiffened or strengthened) Pharaoh’s heart so that he would not let the Israelites go out of his land.