Revelation 9:15

And the four messengers were loosed, who had been prepared for the hour, and day, and month, and year, that they should slay the third of men.

Revelation 8:7

And, the first, sounded; and there came to be hail and fire mingled with blood, and it was cast unto the earth; and, the third of the earth, was burned up, and, the third of the trees, was burned up, and, all green herbage, was burned up.

Revelation 9:18

by these three plagues, were slain, the third part of mankind, by reason of the fire and the smoke and the brimstone, that proceedeth out of their mouths;

Revelation 8:9

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

Revelation 8:11-12

And, the name of the star, is called Wormwood; and the third 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 unto them, that they should not slay them, but that they should be tormented five months; and, the torture of them, was as of a scorpion's torture, whensoever it smiteth a man.

Revelation 9:10

and they have tails like unto scorpions, and stings, and, in their tails, is their licence 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 unto them, that they should not slay them, but that they should be tormented five months; and, the torture of them, was as of a scorpion's torture, whensoever it smiteth a man.

For to

Revelation 9:18
by these three plagues, were slain, the third part of mankind, by reason of the fire and the smoke and the brimstone, that proceedeth out of their mouths;
Revelation 8:7
And, the first, sounded; and there came to be hail and fire mingled with blood, and it was cast unto the earth; and, the third of the earth, was burned up, and, the third of the trees, was burned up, and, all green herbage, was burned up.