Exodus 8:32 KJV
And Pharaoh hardened his heart at this time also, neither would he let the people go.
Exodus 8:32, King James Version
In context
31 And the Lord did according to the word of Moses; and he removed the swarms of flies from Pharaoh, from his servants, and from his people; there remained not one.
32 And Pharaoh hardened his heart at this time also, neither would he let the people go.