Isaiah 34:6-8

Lord YAHWEH has a judgment-sword dripping with blood. It is smeared with fat, dripping with the blood of lambs and goats, and covered with the fat of rams’ kidneys. Lord YAHWEH has a sacrifice in Bozrah and a great slaughter in the land of Edom. Cattle and young bulls will also be slain; their land will be drenched with blood and the dust soaked with fat. For Lord YAHWEH has a day of vengeance, a year of vindication for Zion’s cause.