Revelation 9:15

And the four angels who had been prepared for the hour and day and month and year were released, in order that they should kill a third of humanity.

Revelation 8:7

And the first blew the trumpet, and there was hail and fire mixed with blood, and it was thrown to the earth, and a third of the earth was burned up, and a third of the trees were burned up, and all the green grass was burned up.

Revelation 9:18

By these three plagues a third of humanity was killed--by the fire and the smoke and the sulphur that came out of their mouths.

Revelation 8:9

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

Revelation 8:11-12

And the name of the star was called Wormwood, and a third of the waters became wormwood, and many people died from the waters because they were made bitter.

Revelation 9:5

And it was granted to them that they should not kill them, but that they would be tormented five months, and their torment [is] like the torment of a scorpion when it stings a person.

Revelation 9:10

And they have tails similar in appearance to scorpions, and stings, and their power to injure people [for] five months [is] in their tails.

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 granted to them that they should not kill them, but that they would be tormented five months, and their torment [is] like the torment of a scorpion when it stings a person.

For to

Revelation 9:18
By these three plagues a third of humanity was killed--by the fire and the smoke and the sulphur that came out of their mouths.
Revelation 8:7
And the first blew the trumpet, and there was hail and fire mixed with blood, and it was thrown to the earth, and a third of the earth was burned up, and a third of the trees were burned up, and all the green grass was burned up.