Revelation 14:18
And another angel came from the altar, who had power over the fire, and he called in a loud voice to him who had the sharp sickle, "Put forth your sharp sickle, and gather the bunches of grapes from the earth's vine, because its grapes are fully ripe."
Revelation 16:8
Then the fourth angel emptied his bowl upon the sun, and permission was given it to scorch mankind with its fiery heat,
Revelation 6:9-10
When He broke the fifth seal, I saw underneath the altar the souls of those who had been slaughtered for being faithful to God's message and for the testimony they bore to it.
Revelation 14:15-16
Then another angel came out of the temple and cried in a loud voice to Him who was seated on the cloud, "Put forth your sickle and reap, for the time to reap has come, because the earth's harvest is ripe."