Revelation 9:18

18 A third of the human race was killed by these three plagues-by the fire, the smoke, and the sulfur that came from their mouths.

Revelation 9:18 Meaning and Commentary

Revelation 9:18

And by these three was the third part of men killed
The Alexandrian copy, and some others, the Complutensian edition, the Vulgate Latin, Syriac, and Ethiopic versions, read, "by these three plagues": as the western Roman empire is in the preceding chapter frequently expressed by the third part of several things, see ( Revelation 8:7-12 ) ; so here the eastern Roman empire by the third part of men; vast numbers of the inhabitants of which were destroyed by the Turks, through the use of guns, out of which issued fire, smoke, and brimstone; and Constantinople, the metropolis of it, was taken in this way, as before observed, with the taking of which the empire ceased.

By the fire, and by the smoke, and by the brimstone, which issued
out of their mouths;
that is, by the firing of guns.

Revelation 9:18 In-Context

16 The number of mounted troops was 200 million; I heard their number.
17 This is how I saw the horses in my vision: The horsemen had breastplates that were fiery red, hyacinth blue, and sulfur yellow. The heads of the horses were like lions' heads, and from their mouths came fire, smoke, and sulfur.
18 A third of the human race was killed by these three plagues-by the fire, the smoke, and the sulfur that came from their mouths.
19 For the power of the horses is in their mouths and in their tails, because their tails, like snakes, have heads, and they inflict injury with them.
20 The rest of the people, who were not killed by these plagues, did not repent of the works of their hands to stop worshiping demons and idols of gold, silver, bronze, stone, and wood, which are not able to see, hear, or walk.
Holman Christian Standard Bible ® Copyright © 2003, 2002, 2000, 1999 by Holman Bible Publishers.  Used by permission.  All rights reserved.