Revelation 9:15

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

Revelation 8:7

And the first sounded; and there was hail and fire mingled with blood, and it was cast on the earth; and a third part of the earth was consumed, and a third part of the trees were consumed, and all the green grass was consumed.

Revelation 9:18

By these three plagues a third part of men were killed, by the fire and the smoke and the sulphur which proceeded from their mouths.

Revelation 8:9

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

Revelation 8:11-12

And the name of the star was called Bitterness. And a third part of the waters became bitter, and many men died by the waters, because they were bitter.

Revelation 9:5

And it was given them not to kill them, but to sting them five months; and their sting was like the sting of a scorpion, when he strikes a man.

Revelation 9:10

And they had tails like scorpions and stings, and in their tails was their power to injure 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 given them not to kill them, but to sting them five months; and their sting was like the sting of a scorpion, when he strikes a man.

For to

Revelation 9:18
By these three plagues a third part of men were killed, by the fire and the smoke and the sulphur which proceeded from their mouths.
Revelation 8:7
And the first sounded; and there was hail and fire mingled with blood, and it was cast on the earth; and a third part of the earth was consumed, and a third part of the trees were consumed, and all the green grass was consumed.