Revelation 9:15

And the four angels were let loose; who were prepared for an hour, and a day, and a month, and a year, to kill the third part of men.

Revelation 8:7

And the first angel sounded his trumpet, and there was hail and fire mingled with blood, and it was cast down upon the earth: and a third part of the trees and every green herb was burnt up.

Revelation 9:18

And by these three things, by the fire, and by the smoke, and by the brimstone, which came out of their mouths, the third part of men were killed.

Revelation 8:9

And a third part of the creatures in the sea, that had life, died; and a third part of the ships were destroyed.

Revelation 8:11-12

and a third part of the waters became as wormwood: and many men died of the waters, because they were bitter.

Revelation 9:5

And to them was given power, not to kill them, but that they should be tormented five months: and their torment was like the torment of a scorpion when it striketh a man.

Revelation 9:10

And they had tails like scorpions, and there were stings in their tails: and their power was to hurt men five months.

Treasury of Scripture Knowledge

Summary

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.

An hour

Bible References

An hour

Revelation 9:5
And to them was given power, not to kill them, but that they should be tormented five months: and their torment was like the torment of a scorpion when it striketh a man.

For to

Revelation 9:18
And by these three things, by the fire, and by the smoke, and by the brimstone, which came out of their mouths, the third part of men were killed.
Revelation 8:7
And the first angel sounded his trumpet, and there was hail and fire mingled with blood, and it was cast down upon the earth: and a third part of the trees and every green herb was burnt up.