Divine justice operates with a profound sense of irony, ensuring that the malicious plots of the wicked ultimately fall back upon their own heads. The certainty of this outcome is so absolute that prophetic tradition often describes this future downfall as if it has already happened [רד״ק].
When considering exactly what is turned back against the wrongdoers, commentators offer different perspectives. Some understand it as their brute physical force, coercion, and extortion [רש״י, מצודת ציון]. Others view it more broadly as their general injustice, toil, and wickedness [רד״ק, מאירי, ביאור שטיינזלץ]. In either case, the result is complete and total destruction [מצודת ציון].
The primary approach among commentators is that this punishment does not arrive from an external source. Instead, the very evil the wicked planned is the exact instrument of their demise. God redirects their violence back at them, much like the Egyptians who plotted to drown the Israelites and ended up drowning in the sea themselves [אבן עזרא, מלבי״ם, מצודת דוד, ביאור שטיינזלץ, אלשיך]. Yet, there are also times when destruction arrives in a completely unexpected manner that the wicked never even imagined [אבן עזרא].
Although justice may sometimes seem delayed, the assurance of their downfall is emphasized repeatedly to guarantee that it will undoubtedly come [רד״ק, מצודת דוד]. This ultimate destruction stems from two intertwined realities: the inherent rot of their own evil actions, and the fact that God watches over His people, actively stepping in to fight their battles [מלבי״ם]. As the judgment is declared, a distinct shift in voice occurs. Some interpret this conclusion as a heartfelt prayer and cry from the Israelites, pleading for salvation [מאירי]. Others hear it as the voice of the Holy Spirit, with the Israelites answering in agreement to confirm the final verdict [אלשיך].
A deeply tragic historical event is permanently linked to these themes of justice and destruction. According to the sages, on the very day the First Temple was destroyed, the Levites stood on their platform singing. They reached the exact moment in the song describing how the wicked would be destroyed by their own evil, but before they could finish the final phrase declaring that God would cut them off, enemy forces breached the Temple and captured it. Centuries later, this exact same sequence of events repeated itself during the tragic fall of the city of Beitar [תורה תמימה].