do you notice how the end of verse 9 says they repented not to give him glory.
GIVE HIM GLORY.

Revelation 16:8-9
8 And the fourth angel poured out his vial upon the sun; and power was given unto him to scorch men with fire.

9 And men were scorched with great heat, and blasphemed the name of God, which hath power over these plagues: and they repented not to give him glory