And the number of the army of the horsemen - It is to be observed here that the strength of the army seemed to be cavalry. In the former plagues there is no distinct mention of horsemen; but here what struck the beholder was the immense and unparalleled number of horsemen.
Were two hundred thousand thousand - A thousand thousand is one million, and consequently the number here referred to would be 200 million. This would be a larger army than was ever assembled, and it cannot be supposed that it is to be taken literally. That it would be a very large host - so large that it would not be readily numbered - is clear. The expression in the original, while it naturally conveys the idea of an immense number, would seem also to refer to some uniqueness in the manner of reckoning them. The language is, "two myriads of myriads" - δύο μυριάδες μυριάδων duo muriades muriadōn. The myriad was ten thousand. The idea would seem to be this. John saw an immense host of cavalry. They appeared to be divided into large bodies that were in some degree separate, and that might be reckoned by ten thousands. Of these different squadrons there were many, and to express their great and unusual numbers he said that there seemed to be myriads of them - two myriads of myriads, or twice ten thousand myriads. The army thus would seem to be immense - an army, as we should say, to be reckoned by tens of thousands.
And I heard the number of them - They were so numerous that he did not pretend to be able to estimate the number himself, for it was beyond his power of computation; but he heard it stated in these round numbers, that there were "two myriads of myriads" of them.

Two hundred thousand thousand - Δυο μυριαδες μυριαδων· Two myriads of myriads; that is, two hundred millions; an army that was never yet got together from the foundation of the world, and could not find forage in any part of the earth. Perhaps it only means vast numbers, multitudes without number. Such a number might be literally true of the locusts. Those who will have their particular system supported by the images in this most obscure book, tell us that the number here means all the soldiers that were employed in this war, from its commencement to its end! Those who can receive this saying let them receive it.

And the number of the army of the horsemen,.... This shows that the four angels before mentioned were men, and design generals of armies, or armies of men, even of horsemen; and manifestly point at the Turks, who were not only originally Persians, and had their name, as some say (e), from Turca in Persia, and from whence the Persians have their name, signifies an horseman; but the armies of the Turks chiefly consisted of horse, and what for show and for use, they had generally double the number of horses and mules as of men (f); and they are very good horsemen, and very dextrous at leaping on and off (g); and the horse's tail is still carried before the general, and principal officers, as an ensign expressive of their military exploits, and showing where their main strength lies. And the number of this mighty army, it is said,
were two hundred thousand thousand; or "two myriads of myriads"; two hundred millions, or twenty thousand brigades of ten thousand each; that is, a very large and prodigious number, almost infinite and incredible, like the army of Gog and Magog, as the sand of the sea, Revelation 20:8. The Turks used to bring, and still do bring vast armies into the field: in the year 1396, Bajazet, with three hundred thousand men, fell upon sixty thousand Christians, killed twenty thousand of them, and lost sixty thousand of his own: against him afterward, in the year 1397, came Tamerlane the Tartar, with four hundred thousand horse, and six hundred thousand foot, and having killed two hundred thousand Turks, took Bajazet prisoner, and carried him about in a cage, in golden chains. In the year 1438, Amurath entered into Pannonia, with three hundred thousand horsemen: and in the year 1453, Mahomet took Constantinople with the like number (h); yea, it is said, that the army at the siege of that city consisted of forty myriads, or four hundred thousand men (i). It is reported, that the great Turk contemptuously sent to the emperor of the Romans a camel, or a dromedary, loaden with wheat, with this vow by a message, that he should bring against him as many fighting men as there were grains of wheat therein (k). And it is related (l), that when Ladislaus, king of Hungary, went out against Amurath with four and twenty thousand horse, Dracula, governor of Walachia, advised him not to attack the emperor of the Turks with so small an army, since he went out every day a hunting with more men than such a number:
and I heard the number of them; expressed by some angel, and therefore John was certain of it, otherwise he could not have told them.
(e) Laonic. Chalcocondylas de reb. Turc. l. 1. p. 6. (f) Ib. l. 7. p. 227, 255. (g) Laonic. Chalcocond. l. 2. p. 65. (h) Alsted. Chronol. p. 321. (i) Laonic. Chalcocond. l. 7. p. 255. (k) Napier in loc. (l) Bonfinius apud Pareum in loc.

Compare with these two hundred million, Psalm 68:17; Daniel 7:10. The hosts here are evidently, from their numbers and their appearance (Revelation 9:17), not merely human hosts, but probably infernal, though constrained to work out God's will (compare Revelation 9:1-2).
and I heard--A, B, Aleph, Vulgate, Syriac, Coptic, and CYPRIAN omit "and."

The number of the army of the horsemen. Countless armies of horsemen are signified.
Having breastplates as of fire, and of hyacinth, and brimstone. Or, bright red, blue and yellow. These are the colors observed.
The heads of the horses. Strength and fierceness are implied.
Out of their mouths proceedeth fire and smoke and brimstone. This is a destroying power. It might well describe the use of gunpowder. One looking at a distance would see the flash of fire, and the smoke, apparently coming from the horses' heads, would smell the brimstone odor, and would see the destructive effect.
By these three plagues. The fire, smoke and brimstone. These agencies slay the third part of men. We have before found that the Old Roman world was divided into three parts. One third part had been destroyed by the first four trumpet invasions. A second third part was taken by the Saracens. If now the third part was taken and destroyed by these three plagues, the symbolism would be fulfilled.