Prophetic symbols often carry layers of meaning, showing how disaster does not always end with an initial wave of destruction. Even a small group of survivors, seemingly safe from immediate ruin, can find themselves pursued by ongoing tragedy. The fire of judgment does not simply stop; it spreads, turning into a lasting symbol of devastation that follows the nation through generations and across different lands of exile.
The act of taking a few individuals who remain from the last third of the nation [רש״י, ביאור שטיינזלץ], those symbolically kept safe and bound in the edges of the prophet's garment [מצודת דוד], and casting them into the flames points to multiple historical tragedies. Looking at the era of the First Temple and the Babylonian exile, this action represents the wicked individuals who were exiled to Babylon and perished there. Specifically, it refers to figures like Zedekiah son of Maaseiah and Ahab son of Kolaiah, who were literally burned to death by the Babylonian king [רש״י, רד״ק]. Another perspective from this same era connects the fire to the many victims murdered by Ishmael son of Nethaniah in the chaotic aftermath of the Temple's destruction [מלבי״ם].
Shifting the focus to a later period, this vision also looks forward to the destruction of the Second Temple. In this view, the fire represents the masses of people who would eventually die from starvation and disease during the Roman siege of Jerusalem [מצודת דוד].
From this small handful of people cast into the flames, a much larger disaster spreads to the entire nation [רש״י, ביאור שטיינזלץ, רד״ק]. This widespread ruin takes many forms: some perish by fire within the city walls, others are struck down by the sword as they try to escape, and the rest are scattered to waste away in distant lands [ביאור שטיינזלץ]. Historically, the fire emerging from this small surviving group represents the catastrophic fallout from the assassination of Gedaliah. His murder caused the remaining Jews to flee to Egypt, leading to their complete destruction [מלבי״ם].
In a broader sense, the spreading fire symbolizes a harsh decree that spares no one, affecting both those who stayed in Jerusalem and those who had already been taken into exile [רד״ק]. Furthermore, this fire serves as a tragic link between the different periods of exile. The suffering of the Second Temple exile would spread across all countries, and because of the sins committed by that generation, even the distant descendants of the First Temple exile living around the world would face the horrors of sword, famine, and disease [מצודת דוד].