Revelation 16:9-11

People were [severely] burned by the great heat; and they reviled the name of God who has power over these plagues, but they did not repent [of their sin] and glorify Him. Then the fifth angel poured out his bowl on the throne of the beast, and his kingdom was plunged into darkness; and people gnawed their tongues because of the pain [of their excruciating anguish and severe torment], [Ex 10:21] and they blasphemed the God of heaven because of their anguish and their sores (abscesses, boils); and they did not repent of what they had done nor hate their wickedness.