Who maketh his angels spirits; his ministers a flaming fire:
Ver. 4. Who maketh his angels spirits] Immaterial substances, fit to attend upon the Father of spirits, and with speed to move suddenly and invisibly into most remote parts.
His ministers a flaming fire] Seraphims they are called for their burning zeal, like so many heavenly salamanders; as also for their irresistible power; the angel that destroyed Sennacherib's army is held to have done it by burning them within, although it appeared not outwardly, as some have been burnt by lightning.