5 And when my sword has finished its work in the heavens, it will fall upon Edom, the nation I have marked for destruction. 6 The sword of the Lord is drenched with blood and covered with fat- with the blood of lambs and goats, with the fat of rams prepared for sacrifice. Yes, the Lord will offer a sacrifice in the city of Bozrah. He will make a mighty slaughter in Edom. 7 Even men as strong as wild oxen will die- the young men alongside the veterans. The land will be soaked with blood and the soil enriched with fat.
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.