In Context

7 and I heard another out of the altar, saying, 'Yes, Lord God, the Almighty, true and righteous are Thy judgments.'

8 And the fourth messenger did pour out his vial upon the sun, and there was given to him to scorch men with fire,

9 and men were scorched with great heat, and they did speak evil of the name of God, who hath authority over these plagues, and they did not reform — to give to Him glory.

10 And the fifth messenger did pour out his vial upon the throne of the beast, and his kingdom did become darkened, and they were gnawing their tongues from the pain,

11 and they did speak evil of the God of the heaven, from their pains, and from their sores, and they did not reform from their works.

12 And the sixth messenger did pour out his vial upon the great river, the Euphrates, and dried up was its water, that the way of the kings who are from the rising of the sun may be made ready;

Revelation 16:10 in Other Translations