8. angel—so Coptic and Andreas. But A, B, C, Vulgate, and Syriac omit it.
upon—not as in Re 16:2, 3, "into."
sun—Whereas by the fourth trumpet the sun is darkened (Re 8:12) in a third part, here by the fourth vial the sun's bright scorching power is intensified.
power was given unto him—rather, "unto it," the sun.
men—Greek, "the men," namely, those who had the mark of the beast (Re 16:2).