Revelation 14:18
And another angel came from the altar, having power over the fire; and he cried out with a loud cry to him who had the sharp sickle, saying, Put forth your sharp sickle, and lop off the clusters of the vine upon the earth; for its grapes are ripe.
Revelation 16:8
And the fourth angel poured forth his vial on the sun; and power was given to it to scorch men with fire.
Revelation 6:9-10
And when he opened the fifth sea, I saw, under the altar, the souls of those who were slaughtered on account of the word of God, and the testimony which they held.
Revelation 14:15-16
And another angel came out of the temple of God, crying with a loud voice, to him that sat upon the cloud. Put forth your sickle, and reap; for the season of reaping is come, because the harvest of the earth is ripe.