Revelation 9:15

Then the four angels who were held in readiness for that hour and day and month and year were let loose to kill one third of mankind.

Revelation 8:7

The first blew his trumpet, and there was a storm of hail and fire mixed with blood, and it fell upon the earth, and one third of the earth was burned up, and one third of the trees were burned up, and all the green grass was burned up.

Revelation 9:18

One third of mankind were killed by these three plagues??he fire, smoke, and sulphur that poured from their mouths.

Revelation 8:9

and one third of all the live creatures in the sea perished, and one third of the ships were destroyed.

Revelation 8:11-12

The star is called Apsinthus, that is, Wormwood. Then one third of the waters turned to wormwood, and numbers of people died of the waters, for they had turned bitter.

Revelation 9:5

They were not allowed to kill anyone, but only to torture them for five months, and the torture they inflicted was like that caused by a scorpion when it stings a man.

Revelation 9:10

They had tails and stings like scorpions; it was in their tails that their power lay to harm men 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 allowed to kill anyone, but only to torture them for five months, and the torture they inflicted was like that caused by a scorpion when it stings a man.

For to

Revelation 9:18
One third of mankind were killed by these three plagues??he fire, smoke, and sulphur that poured from their mouths.
Revelation 8:7
The first blew his trumpet, and there was a storm of hail and fire mixed with blood, and it fell upon the earth, and one third of the earth was burned up, and one third of the trees were burned up, and all the green grass was burned up.