Here we have no history to guide us in the government of our fancies and judgments, but their opinion seems most probable to me, who, by the sun, understand some great prince or potentate, or the whole civil power in the antichristian heaven; suppose the Spaniard, or the emperor. It seems to signify either some destruction of such civil powers, or some defection of them from the papacy, which will vex and enrage antichrist and his party, as if they were scorched with fire. This I look upon as much more probable than theirs who interpret it of the natural sun, or the word of God.
Related Commentaries of Revelation 16:8
Revelation 16:8
8 And the fourth angel poured out his vial upon the sun; and power was given unto him to scorch men with fire.