Charles Ellicott Commentary Isaiah 9:5

"For all the armor of the armed man in the tumult, and the garments rolled in blood, shall be for burning, for fuel of fire." — Isaiah 9:5 (ASV)

For every battle of the warrior ... —Here again the whole verse requires re-translating: “Every boot of the warrior that tramps noisily, and the cloak rolled in blood, are (i.e., shall be) for burning, (as) fuel for fire.

The picture of the conquerors collecting the spoil is continued from Isaiah 9:3. The victory is decisive, and the reign of peace begins. Consequently, the weapons of war, the garments red with blood (Isaiah 63:1–3), the heavy boot that makes the earth ring with the warrior’s tread, these shall all be burnt up. Similar pictures of a time of peace are found in Zechariah 9:10; Ezekiel 39:9; Psalms 46:9; and Psalms 76:3.