In Context

2 For Yahweh is enraged against all the nations, and angry with all their armies. He has utterly destroyed them. He has given them over for slaughter.

3 Their slain will also be cast out, and the stench of their dead bodies will come up; and the mountains will melt in their blood.

4 All of the army of the sky will be dissolved. The sky will be rolled up like a scroll, and all its armies will fade away, as a leaf fades from off a vine or a fig tree.

5 For my sword has drunk its fill in the sky. Behold, it will come down on Edom, and on the people of my curse, for judgment.

6 Yahweh's sword is filled with blood. It is covered with fat, with the blood of lambs and goats, with the fat of the kidneys of rams; for Yahweh has a sacrifice in Bozrah, And a great slaughter in the land of Edom.

7 The wild oxen will come down with them, and the young bulls with the mighty bulls; and their land will be drunken with blood, and their dust made greasy with fat.

Isaiah 34:5 in Other Translations