Revelation 14:18
And another angel came out from the altar, who had power over fire; and cried with a loud cry to him that had the sharp sickle, saying, Thrust in thy sharp sickle, and gather the clusters of the vine of the earth; for her grapes are fully ripe.
Joel 3:13
Put ye in the sickle, for the harvest is ripe: come, go down; for the press is full, the vats overflow; for their wickedness is great.
Revelation 16:8
And the fourth angel poured out his vial upon the sun; and power was given to him to scorch men with fire.
Revelation 6:9-10
And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
Revelation 14:15-16
And another angel came out of the temple, crying with a loud voice to him that sat on the cloud, Thrust in thy sickle, and reap: for the time is come for thee to reap; for the harvest of the earth is ripe.