Revelation 9:15

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

Revelation 8:7

And the first sounded; and there hail and fire, mingled with blood, and it was cast down upon the earth; and a third part of the trees was burnt up, and all the herbage was burnt up.

Revelation 9:18

With these three-by the fire, by the smoke, and by the brimstone-that went out of their mouths, they slew a third part of men.

Revelation 8:9

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

Revelation 8:11-12

and the name of the star was called Wormwood, and a third part of the waters became wormwood; and many men died of the waters, because they were become bitter.

Revelation 9:5

And it was not given to them to kill them, but to torment them five months: and their torment was like that of a scorpion when it stings a man.

Revelation 9:10

And they had tails like scorpions, and their stings were 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 it was not given to them to kill them, but to torment them five months: and their torment was like that of a scorpion when it stings a man.

For to

Revelation 9:18
With these three-by the fire, by the smoke, and by the brimstone-that went out of their mouths, they slew a third part of men.
Revelation 8:7
And the first sounded; and there hail and fire, mingled with blood, and it was cast down upon the earth; and a third part of the trees was burnt up, and all the herbage was burnt up.