Isaiah 34:5-6

MSB(i) 5 When My sword has drunk its fill in the heavens, then it will come down upon Edom, upon the people I have devoted to destruction. 6 The sword of the LORD is bathed in blood. It drips with fat—with the blood of lambs and goats, with the fat of the kidneys of rams. For the LORD has a sacrifice in Bozrah, a great slaughter in the land of Edom.