Isaiah 41:14-16. “Fear not, thou worm Jacob, and ye men of Israel: I will help thee, saith the Lord, and thy Redeemer, the Holy One of Israel. Behold, I will make thee a new sharp threshing instrument having teeth: thou shalt thresh the mountains, and beat them small, and shalt make the hills as chaff. Thou shalt fan them and the wind shall carry them away, and the whirlwind shall scatter them: and thou shalt rejoice in the Lord, and shalt glory in the Holy One of Israel.”
The word worm in v. 14 pictures man in his unclean, sinful state, in contrast with God, the Holy One of Israel. The particular Hebrew word refers to the worm from which crimson dye was made; crimson being a word that is often used to denote sin (Isaiah 1:18).
In vv. 15-16, Israel is depicted as the Lord’s instrument in bringing their enemies to nothing. Israel will be a sharp, new threshing roller with two-edged knives, like an instrument that cut up the straw for fodder, and separates the grain from the chaff. The mountains and hills, figurative of proud and powerful enemies, will be threshed to powder, and scattered and destroyed, as chaff is blown by the wind.
Of special interest is God’s description of Himself as the Holy One of Israel, and as their Redeemer. These two promises are repeated often in the book of Isaiah, emphasizing that God intends to keep all His promises to His people.