Revelation 16:9

And men were scorched with great heat, and they reviled the name of God, who had power over these plagues, and reformed not, to give him glory.

Treasury of Scripture Knowledge

Summary

But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.

He hardened

Bible References

He hardened

Revelation 16:9
And men were scorched with great heat, and they reviled the name of God, who had power over these plagues, and reformed not, to give him glory.