Revelation 14:18
From the altar came another angel who had authority over fire. He called out in a loud voice to the angel who had the sharp sickle, "Swing your sharp sickle, and gather the bunches of grapes from the vine of the earth, because those grapes are ripe."
Joel 3:13
Put in the sickle, because the harvest is ripe. Come and go down, because the winepress is full. The wine vats are overflowing, because their evil is great!
Revelation 16:8
The fourth angel poured his bowl on the sun, which then was allowed to burn people with fire,
Revelation 6:9-10
When the lamb opened the fifth seal, I saw under the altar the souls of those who had been slaughtered because of the word of God and the testimony they had given.
Revelation 14:15-16
Another angel came out of the Temple, crying out in a loud voice to the one who sat on the cloud, "Swing your sickle, and gather the harvest, for the hour has come to gather it, because the harvest of the earth is fully ripe."