Revelation 14:18
And another angel came forth from the altar, having authority over fire; and he cried with a loud voice to him who held the sharp sickle, saying, Put in thy sharp sickle, and gather the bunches of the vine of the earth; for her clusters are ripe.
Revelation 16:8
And the fourth angel poured out his vase upon the sun; and there was given to it a charge to burn men with fire.
Revelation 6:9-10
And when he opened the fifth seal I saw underneath the altar the souls of those who had been slain for the word of God, and for the testimony which they maintained.
Revelation 14:15-16
And anther angel came forth out of the temple, crying with a loud voice to him that sat upon the cloud, Put in thy sickle, and reap: for the hour is come for thee to reap; because the harvest of the earth is fully ripe.