Isaiah 9:5

"For every boot of those who tramp with boots in the tumult of battle, and cloak rolled in blood, shall be for burning, a food of fire." That which is the food of fire becomes at the same time a sĕrēphâh, inasmuch as the devouring fire reduces it to ashes, and destroys its previous existence. This closing statement requires for סאון the concrete sense of a combustible thing; and this precludes such meanings as business (Handel und Wandel), noise, or din (= שׁאון, Jerome, Syriac, Rashi, and others). On the other hand, the meaning "military equipment," adopted by Knobel and others - a meaning derived from a comparison of the derivatives of the Aramaean zūn, ăzan, and the Arabic zâna, fut. yezı̄n (to dress or equip) - would be quite admissible; at the same time, the interchange of Samech and Zain in this word cannot be dialectically established. Jos. Kimchi has very properly referred to the Targum sēn, mesân (Syr. also sâūn with an essentially long a), which signifies shoe (see Bynaeus, de calceo Hebraeorum) - a word which is more Aramaean than Hebrew, and the use of which in the present connection might be explained on the ground that the prophet had in his mind the annihilation of the Assyrian forces. We should no doubt expect sâ'ūn (sandaloumenos) instead of sō'ēn; but the denom. verb sâ'ăn might be applied to a soldier's coming up in military boots, and so signify Caligatum venire, although the primary meaning is certainly Calceare se (e.g., Eph 6:15, Syr.). Accordingly we should render it, "every boot of him who comes booted (des Einherstiefelnden) into the tumult of battle," taking the word ra‛ash, not as Drechsler does, in the sense of the noise made by a warrior coming up proudly in his war-boots, nor with Luzzatto in the sense of the war-boot itsel…

The prophet in this chapter (according to the directions given him, Isa 3:10, Isa 3:11) saith to the righteous, It shall be well with thee, but Woe to the wicked, it shall be ill with him. Here are, I. Gracious promises to those that adhere to the law and to the testimony; while those that seek to familiar spirits shall be driven into darkness and dimness, they shall see a great light, relief in the midst of their distresses, typical of gospel grace. I. In the doctrine of the Messiah (Isa 9:1-3). 2. His victories (Isa 9:4, Isa 9:5). 3. His government and dominion as Immanuel (Isa 9:6, Isa 9:7). II. Dreadful threatenings against the people of Israel, who had revolted from and were enemies to the house of David, that they should be brought to utter ruin, that their pride should bring them down (Isa 9:8-10), that their neighbours should make a prey of them (Isa 9:11, Isa 9:12), that, for their impenitence and hypocrisy, all their ornaments and supports should be cut off (Isa 9:13-17), and that by the wrath of God against them, and their wrath one against another, they should be brought to utter ruin (Isa 9:18-21). And this is typical of the final destruction of all the enemies of the Son of David and his kingdom.

9:5 Burning the boots and uniforms marked the end of the need for instruments of war.