Revelation 9:16
“And the number of the army of the horsemen were two hundred thousand thousand: and I heard the number of them.”
Saying to the sixth angel which had the trumpet, Loose the four angels which are bound in the great river Euphrates.
And the four angels were loosed, which were prepared for an hour, and a day, and a month, and a year, for to slay the third part of men.
And the number of the army of the horsemen were two hundred thousand thousand: and I heard the number of them.
And thus I saw the horses in the vision, and them that sat on them, having breastplates of fire, and of jacinth, and brimstone: and the heads of the horses were as the heads of lions; and out of their mouths issued fire and smoke and brimstone.
By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“And I beheld, and I heard the voice of many angels round about the throne and the beasts and the elders: and the number of them was ten thousand times ten thousand, and thousands of thousands;”
“And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle.”
“And thus I saw the horses in the vision, and them that sat on them, having breastplates of fire, and of jacinth, and brimstone: and the heads of the horses were as the heads of lions; and out of their mouths issued fire and smoke and brimstone.”
“And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel.”
“And he gathered them together into a place called in the Hebrew tongue Armageddon.”