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 slay the third part of men.

Revelation 8:7

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

Revelation 9:18

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

Revelation 8:9

And the third part of the creatures which were in the sea, and 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 men died of the waters, because they were made bitter.

Revelation 9:5

And to them it was given 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 had tails like unto 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 it was given 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 was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths.
Revelation 8:7
The first angel sounded, and there followed hail and fire mingled with blood, and they were cast upon the earth: and the third part of trees was burnt up, and all green grass was burnt up.