Revelation 9:18

By these evils a third part of men was put to death, by the fire, and the smoke, and the burning smell which came out of their mouths.

Revelation 9:15

And the four angels were made free, who were ready for the hour and day and month and year, that they might put to death a third part of men.

Revelation 9:17

And so I saw the horses in the vision, and those who were seated on them, having breastplates of fire and glass and of burning stone: and the heads of the horses were as the heads of lions; and out of their mouths came fire and smoke and a smell of burning.

Treasury of Scripture Knowledge

Summary

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.

The third

Bible References

The third

Revelation 9:15
And the four angels were made free, who were ready for the hour and day and month and year, that they might put to death a third part of men.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain