Revelation of John 9:16-19

Verse 16

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.
Verse 17

Breastplates of fire - jacinth, and brimstone - That is, red, blue, and yellow; the first is the color of fire, the second of jacinth, and the third of sulphur.

And the heads of the horses - Is this an allegorical description of great ordnance? Cannons, on the mouths of which horses' heads were formed, or the mouth of the cannon cast in that form? Fire, smoke, and brimstone, is a good allegorical representation of gunpowder. The Ottomans made great use of heavy artillery in their wars with the Greeks of the lower empire.
Verse 18

By these three was the third part of men killed - That is, By these was great carnage made.
Verse 19

Their power is in their mouth - From these the destructive balls are projected; and in their tails, the breech where the charge of gunpowder is lodged.

Their tails were like unto serpents, and had heads - If cannons are intended, the description, though allegorical, is plain enough; for brass ordnance especially are frequently thus ornamented, both at their muzzles and at their breech.
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