Isaiah 34:5 in the King James Version
For my sword shall be bathed in heaven: behold, it shall come down upon Idumea, and upon the people of my curse, to judgment.
Context
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 The LORD’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 the LORD has a sacrifice in Bozrah, and a great slaughter in the land of Edom.