The prophecy of disaster against Judah concludes with a harsh decree of destruction aimed at the kingdom's centers of power. A sweeping ruin is destined to strike the land, targeting the very heart of the nation.
The primary approach among commentators is that the promised fire is not merely a physical blaze. Instead, it serves as a metaphor for a human conqueror. This destructive force is Nebuchadnezzar, the king of Babylon, who is sent to bring total ruin to the region.
The impending doom is specifically focused on Jerusalem. The reason for singling out this city is its status as the royal home and the central capital of Judah's government [אבן עזרא].