5 For my sword in heaven is full of wrath: see, it is coming down on Edom, in punishment on the people of my curse. 6 The sword of the Lord is full of blood, it is fat with the best of the meat, with the blood of lambs and goats, with the best parts of the sheep: for the Lord has a feast in Bozrah, and much cattle will be put to death in the land of Edom. 7 And the strong oxen will go down to death together with the smaller cattle.
Matthew Henry's Commentary on Isaiah 34:5-7
Commentary on Isaiah 34:1-8
(Read Isaiah 34:1-8)
Here is a prophecy of the wars of the Lord, all which are both righteous and successful. All nations are concerned. And as they have all had the benefit of his patience, so all must expect to feel his resentment. The description of bloodshed suggests tremendous ideas of the Divine judgments. Idumea here denotes the nations at enmity with the church; also the kingdom of antichrist. Our thoughts cannot reach the horrors of that awful season, to those found opposing the church of Christ. There is a time fixed in the Divine counsels for the deliverance of the church, and the destruction of her enemies. We must patiently wait till then, and judge nothing before the time. Through Christ, mercy is exercised to every believer, consistently with justice, and his name is glorified.