Isaiah 63:2

Wherefore art thou red in thine apparel, and thy garments like him that treadeth in the winefat?

Wherefore (art thou) red in thine apparel? ... The prophet asks why His garments are "dyed" and "red."

Winefat - rather, the wine-press, wherein the grapes were trodden with the feet, from which the juice would flow off into the wine vat: the juice would stain the garment of him who trod them (Revelation 14:19; ). The image was appropriate, as the country round Bozrah abounded in grapes. This final blow, inflicted by Messiah and His armies (Revelation 19:13), shall decide His claim to the kingdoms usurped by Satan, and by the "beast," to whom Satan delegates his power. It will be a day of judgment to the hostile Gentiles, as His first coming was a day of judgment to the unbelieving Jews.