Rev. 14:15 – Another angel came out of the sanctuary, crying out in a loud voice to the One who was seated on the cloud, “Use your sickle and reap, for the time to reap has come, since the harvest of the earth is ripe.” 16 So the One seated on the cloud swung His sickle over the earth, and the earth was harvested. (HCSB)
The earth was harvested
John picks up the narrative in verses 15-16: “Another angel came out of the sanctuary, crying out in a loud voice to the One who was seated on the cloud, ‘Use your sickle and reap, for the time to reap has come, since the harvest of the earth is ripe.’ So the One seated on the cloud swung His sickle over the earth, and the earth was harvested.”
The harvest in these verses, though not stated explicitly, refers to wheat or barley. The word for ripe (Gr.: xeraino) describes dried heads of grain and is different than the word used of ripened grapes in verse 18.
The phrase “another angel” does not imply that the “One like the Son of Man” is an angel. John simply is continuing his observation from the point of the three angels in verses 6-13. This angel comes out of the sanctuary and heads straight for the One holding the sickle. He bears a message from God the Father, who is seated on His throne in the heavenly Holy of Holies (Rev. 6:9; 8:3; 11:19). The message is simple: The time to reap has come; the earth is ripe for harvest. The One seated on the cloud asks no questions, nor does He hesitate. He swings His sickle over the earth, and it is harvested.
No doubt this is a harvest of people on the earth. But who are they? Commentators differ in their understanding of this passage. Some believe this is the harvest of the just, coming before the harvest of the unbelievers (vv. 17-20); it is distinct just as the wheat harvest is distinct from the harvest of grapes. Others, however, argue that scripture normally speaks only of unbelievers being cut down. Therefore, both the One like the Son of Man and the angel with the sickle are engaged in destroying the wicked; one harvest, two perspectives.