Parallel
Revelation 9:18
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
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.
A third of mankind was killed by the three plagues of fire, smoke, and sulfur that proceeded from their mouths.