Revelation 9:15

And the four angels were loosed, who are prepared for the hour and day and month and year, that they might slay the third part of men;

Revelation 8:7

And the first sounded his trumpet: and there was hail and fire, mingled with blood, and they were cast upon the earth; and the third part of the earth was burnt up, and the third part of the trees was burnt up, and all green grass was burnt up.

Revelation 9:18

By these three plagues were the third part of men killed, by the fire and the smoke and the brimstone which goes out of their mouths.

Revelation 8:9

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

Revelation 8:11-12

And the name of the star is called Wormwood; and the third part of the waters became wormwood, and many of the men died of the waters because they were made bitter.

Revelation 9:5

and it was given to them that they should not kill them, but that they should be tormented five months; and their torment was as the torment of a scorpion when it strikes a man.

Revelation 9:10

and they have tails like scorpions, and stings; and their power was in their tails 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 given to them that they should not kill them, but that they should be tormented five months; and their torment was as the torment of a scorpion when it strikes a man.

For to

Revelation 9:18
By these three plagues were the third part of men killed, by the fire and the smoke and the brimstone which goes out of their mouths.
Revelation 8:7
And the first sounded his trumpet: and there was hail and fire, mingled with blood, and they were cast upon the earth; and the third part of the earth was burnt up, and the third part of the trees was burnt up, and all green grass was burnt up.