Revelation 9:15

And the four angels were loosed, prepared for an hour, and a day, and a month, and a year, that they might kill the third of men.

Revelation 8:7

And the first angel sounded the trumpet, and there were hail and fire mingled with blood, and it was cast into the earth: and a third of the trees were burned down, and all green grass was burned down.

Revelation 9:18

By these three were the third of men killed, from fire, and from smoke, and from brimstone, coming forth out of their mouths.

Revelation 8:9

And the third of the creatures which in the sea, died, those having souls; and the third of the ships were destroyed.

Revelation 8:11-12

And the name of the star is called Wormwood: and the third of the waters is into wormwood; and many of men died of the waters, for they were rendered bitter.

Revelation 9:5

And it was given them that they should not kill them, but that they should be tortured five months: and their torture as the torture of a scorpion, when he should strike a man.

Revelation 9:10

And they have tails as scorpions, and goads were in their tails: and 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 that they should not kill them, but that they should be tortured five months: and their torture as the torture of a scorpion, when he should strike a man.

For to

Revelation 9:18
By these three were the third of men killed, from fire, and from smoke, and from brimstone, coming forth out of their mouths.
Revelation 8:7
And the first angel sounded the trumpet, and there were hail and fire mingled with blood, and it was cast into the earth: and a third of the trees were burned down, and all green grass was burned down.