Albert Barnes Commentary Revelation 14:17

"Another angel came out from the temple which is in heaven, he also having a sharp sickle." — Revelation 14:17 (ASV)

And another angel. The fifth in order. This angel came for a different purpose—with reference to the cutting off of the enemies of God, represented by the gathering of a vintage. Compare Matthew 13:41; Matthew 24:31.

Came out of the temple which is in heaven. Sent or commissioned by God. See Barnes on Revelation 14:15.

He also having a sharp sickle. On the word sickle, see Barnes on Revelation 14:14.