Revelation 16:9-11

Though they endured the fierce heat, yet the people continued to blaspheme God. They cursed the name of God, who had authority over these plagues, and refused to repent and give him glory. The fifth angel poured his bowl on the throne of the wild beast, and its kingdom was plunged into darkness. People were in agony and gnawed their tongues and cursed the God of heaven because of their painful sores, refusing to repent of their deeds.