The sword of the LORD is filled with blood, it is made fat with fatness, and with the blood of lambs and goats, with the fat of the kidneys of rams: for the LORD hath a sacrifice in Bozrah, and a great slaughter in the land of Idumea.
The sword of the Lord is filled with blood - glutted. The image of a sacrifice is continued.
Blood ... fat - the parts especially devoted to God in a sacrifice (2 Samuel 1:22).
Lambs ... goats - sacrificial animals. The Idumeans of all classes, doomed to slaughter, are meant (Zephaniah 1:7).
Bozrah - called Bostra by the Romans, etc., assigned in Jeremiah 48:24 to Moab, so that it seems to have been at one time in the dominion of Edom, and at another in that of Moab (Isaiah 63:1; Jeremiah 49:13; Jeremiah 49:20; Jeremiah 49:22): it was strictly not in Edom, but the capital of Auranitis (the Houran). Edom seems to have extended its dominion so as to include it (cf. Lamentations 4:21).