Revelation 9:15

So the four angels who were prepared for the hour, day, month, and year were released to kill a third of the human race.

Revelation 8:7

The first angel blew his trumpet, and hail and fire, mixed with blood, were hurled to the earth. So a third of the earth was burned up, a third of the trees were burned up, and all the green grass was burned up.

Revelation 9:18

A third of the human race was killed by these three plagues—by the fire, the smoke, and the sulfur that came from their mouths.

Revelation 8:9

a third of the living creatures in the sea died, and a third of the ships were destroyed.

Revelation 8:11-12

The name of the star is Wormwood, and a third of the waters became wormwood. So, many of the people died from the waters, because they had been made bitter.

Revelation 9:5

They were not permitted to kill them but were to torment them for five months; their torment is like the torment caused by a scorpion when it strikes a man.

Revelation 9:10

and they had tails with stingers like scorpions, so that with their tails they had the power to harm people for 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
They were not permitted to kill them but were to torment them for five months; their torment is like the torment caused by a scorpion when it strikes a man.

For to

Revelation 9:18
A third of the human race was killed by these three plagues—by the fire, the smoke, and the sulfur that came from their mouths.
Revelation 8:7
The first angel blew his trumpet, and hail and fire, mixed with blood, were hurled to the earth. So a third of the earth was burned up, a third of the trees were burned up, and all the green grass was burned up.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.