Revelation 14:18
And another angel came out from the altar, he that hath power over fire; and he called with a great voice to him that had the sharp sickle, saying, Send forth 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, tread ye; for the winepress is full, the vats overflow; for their wickedness is great.
Revelation 16:8
And the fourth poured out his bowl upon the sun; and it was given unto it to scorch men with fire.
Revelation 6:9-10
And when he opened the fifth seal, I saw underneath the altar the souls of them that had been slain for the word of God, and for the testimony which they held:
Revelation 14:15-16
And another angel came out from the temple, crying with a great voice to him that sat on the cloud, Send forth thy sickle, and reap: for the hour to reap is come; for the harvest of the earth is ripe.