What does Isaiah 10:18 mean?
The prophet Isaiah continues to metaphorically describe the Lord's destruction of the Assyrian Empire (Isaiah 10:15–17). Once God is done using Assyria to judge His own people, His wrath will be turned on them. Isaiah describes Assyria as a mighty forest. He wrote in the previous verse (Isaiah 10:17) that the Holy One will become a flame that burns through the thorns and briers of the forest underbrush.Now that fire consumes the forest itself. The destruction burning the glory of the arrogant king, and the land that made him so great and wealthy. The Lord will destroy the king's empire, both body and soul. His empire will be like a mighty man who gets a terrible disease and is diminished to an emaciated remnant of its former self. As the following verse shows (Isaiah 10:19), very little of the Assyrian Empire will remain once the Lord is done burning it down to size.