Charles Spurgeon Commentary Revelation 14:18-19

"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. And the angel cast his sickle into the earth, and gathered the vintage of the earth, and cast it into the winepress, the great [winepress], of the wrath of God." — Revelation 14:18-19 (ASV)

And another angel came out from the altar, which 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. And the angel thrust in his sickle into the earth, and gathered the vine of the earth.

This is the gathering together of the ungodly, those wicked clusters that ripen in sin, and that become red with iniquity. Christ does not gather them, you see. That is left to an angel to do; he thrust in his Sickle, and gathered the grapes of the earth.