In Revelation 14:15-16, at seemingly the end of the age, we have this scene:
Then another angel came out of the temple and called in a loud voice to him who was sitting on the cloud, “Take your sickle and reap, because the time to reap has come, for the harvest of the earth is ripe.” So he who was seated on the cloud swung his sickle over the earth, and the earth was harvested. (NIV)
But then immediately in 17-19 we read about another harvest:
Another angel came out of the temple in heaven, and he too had a sharp sickle. Still another angel, who had charge of the fire, came from the altar and called in a loud voice to him who had the sharp sickle, “Take your sharp sickle and gather the clusters of grapes from the earth’s vine, because its grapes are ripe.” The angel swung his sickle on the earth, gathered its grapes and threw them into the great winepress of God’s wrath. (NIV)
If the whole earth is harvested in verses 15-16, then why is there a second harvest in 17-19? Are these the same harvest pictured twice? If so, to what end? Or are they do different harvests of two different things?