18 By these three plagues were one third of mankind killed: by the fire, the smoke, and the sulfur, which proceeded out of their mouths.
The four angels were freed who had been prepared for that hour and day and month and year, so that they might kill one third of mankind.
Worthy.Bible » Commentaries » Matthew Henry Commentary » Commentary on Revelation 9
Commentary on Revelation 9 Matthew Henry Commentary
Chapter 9
In this chapter we have an account of the sounding of the fifth and sixth trumpets, the appearances that attended them, and the events that were to follow; the fifth trumpet (v. 1-12), the sixth (v. 13-21).
Rev 9:1-12
Upon the sounding of this trumpet, the things to be observed are,
Rev 9:13-21
Here let us consider the preface to this vision, and then the vision itself.