14 saying to the sixth angel who had the trumpet, "Release the four angels who are bound at the great river Euphra'tes." 15 So the four angels were released, who had been held ready for the hour, the day, the month, and the year, to kill a third of mankind. 16 The number of the troops of cavalry was twice ten thousand times ten thousand; I heard their number. 17 And this was how I saw the horses in my vision: the riders wore breastplates the color of fire and of sapphire and of sulphur, and the heads of the horses were like lions' heads, and fire and smoke and sulphur issued from their mouths. 18 By these three plagues a third of mankind was killed, by the fire and smoke and sulphur issuing from their mouths. 19 For the power of the horses is in their mouths and in their tails; their tails are like serpents, with heads, and by means of them they wound. 20 The rest of mankind, who were not killed by these plagues, did not repent of the works of their hands nor give up worshiping demons and idols of gold and silver and bronze and stone and wood, which cannot either see or hear or walk; 21 nor did they repent of their murders or their sorceries or their immorality or their thefts.
Matthew Henry's Commentary on Revelation 9:14-21
Commentary on Revelation 9:13-21
(Read Revelation 9:13-21)
The sixth angel sounded, and here the power of the Turks seems the subject. Their time is limited. They not only slew in war, but brought a poisonous and ruinous religion. The antichristian generation repented not under these dreadful judgments. From this sixth trumpet learn that God can make one enemy of the church a scourge and a plague to another. The idolatry in the remains of the eastern church and elsewhere, and the sins of professed Christians, render this prophecy and its fulfilment more wonderful. And the attentive reader of Scripture and history, may find his faith and hope strengthened by events, which in other respects fill his heart with anguish and his eyes with tears, while he sees that men who escape these plagues, repent not of their evil works, but go on with idolatries, wickedness, and cruelty, till wrath comes upon them to the utmost.