Rev 9:17. Πυρίνους καὶ ὑακινθίνους καὶ θειώδεις, of fire, and of jacinth, and of brimstone) Lucretius joins together the same colours in another matter: lib. iv.-
Lutea russaque vela
Et ferruginea-
(yellow, red, and black hangings). Ferruginea are the same as hyacinthina. Virgil says, ferrugineos hyacinthos; that is, according to Servius, of a dark colour. Wherefore in this passage, the breast-plates of jacinth and the smoke answer to one another; as the breast-plates of fire and the fire, and the breastplates of brimstone and the brimstone. Literal and figurative things are blended together in this and the following verses.