Revelation 14:18
And another angel came out from the altar, the angel who has authority over the fire, and he called with a loud voice to the one who had the sharp sickle, "Put in your sickle and gather the clusters from the vine of the earth, for its grapes are ripe."
Joel 3:13
Put in the sickle, for the harvest is ripe. Go in, tread, for the winepress is full. The vats overflow, for their evil is great.
Revelation 16:8
The fourth angel poured out his bowl on the sun, and it was allowed to scorch people with fire.
Revelation 6:9-10
When he opened the fifth seal, I saw under the altar the souls of those who had been slain for the word of God and for the witness they had borne.
Revelation 14:15-16
And another angel came out of the temple, calling with a loud voice to him who sat on the cloud, "Put in your sickle, and reap, for the hour to reap has come, for the harvest of the earth is fully ripe."