The Greek noun drepanon refers to a sickle or curved cutting blade used for harvesting grain or grapes. It carries profound eschatological significance in Revelation's harvest imagery.
Drepanon appears in the great harvest vision of Revelation 14:14-20, where the Son of Man wields a sharp sickle to reap the earth's harvest. Two harvests are described: one of grain (the ingathering of the righteous) and one of grapes (the winepress of God's wrath). This imagery draws directly on Joel 3:13 and Isaiah 63. The drepanon of judgment is both terrifying and necessary — it signals the end of the age when God's patience reaches its appointed limit and the harvest of history is gathered.