Revelation 9:15

And the four angels were loosed, who were ready at the hour, and day, and month, and year, to kill the third part of mankind.

Revelation 8:7

And the first angel blew the trumpet, and there were hail and fire mingled with blood, and they were cast on the earth; and a third part of the trees was burnt up, and all green grass was burnt up.

Revelation 9:18

By these three were slain the third part of mankind, by the fire, and by the smoke, and by the sulphur, which proceeded out of their mouths.

Revelation 8:9

and a third part of the creatures having life, which are in the sea, died; and a third part of the ships was destroyed.

Revelation 8:11-12

and the name of the star is called Wormwood: and the third part of the waters was turned into wormwood, and multitudes of men died of the waters, because they were made bitter.

Revelation 9:5

And it was given them in charge that they should not kill these men outright, but that they should be tormented five months: and their torment is as the torment of a scorpion when he striketh a man.

Revelation 9:10

And they had tails like scorpions, and there were stings in their tails: and they had power to hurt 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 in charge that they should not kill these men outright, but that they should be tormented five months: and their torment is as the torment of a scorpion when he striketh a man.

For to

Revelation 9:18
By these three were slain the third part of mankind, by the fire, and by the smoke, and by the sulphur, which proceeded out of their mouths.
Revelation 8:7
And the first angel blew the trumpet, and there were hail and fire mingled with blood, and they were cast on the earth; and a third part of the trees was burnt up, and all green grass was burnt up.