Following profound descriptions of destruction and suffering, a dramatic turning point of comfort and hope emerges. The scales of justice flip: the period of punishment for the Israelites comes to an end, and the cup of wrath passes to their enemies. Having absorbed the full measure of their deserved penalty, the Israelites have paid for their transgressions and earned complete forgiveness [רש״י, ביאור שטיינזלץ, צאינה וראינה]. Paradoxically, it was the very agony of this destruction that brought about total pardon, achieving what forty years of prophetic warnings failed to accomplish [תורה תמימה]. The Israelites, for their part, accept this suffering with love [פלגי מים].
Following this profound atonement comes a promise that there will be no further exile. The primary approach among commentators is that God will never exile the Israelites again, particularly after the final exile of Edom [רש״י]. However, an alternative perspective suggests that the sin itself is the focus—sin will no longer cause them to be exiled, because in the ultimate future, the evil inclination will be entirely abolished from the world [אבן עזרא, לחם דמעה].
The focus then shifts to the second half of this divine equation. Suffering in the world is not created without purpose; when a person or a nation repents, their suffering is transferred to their deserving enemies. With the punishment of the Israelites concluded, God remembers the crimes of Edom and finally settles the score with them [תורה תמימה, ביאור שטיינזלץ].
A deep theological difference exists in how God judges these two nations, specifically regarding intentional crimes versus unintentional mistakes. For the Israelites, the harsh reality of exile cleanses their severe, intentional sins. Once these are atoned for, God redeems them without delaying their salvation over unintentional mistakes. Such lesser faults will eventually find repair through sacrifices once the Temple is rebuilt. Furthermore, because the Israelites immediately regret their wrongdoings, they are spared punishment for their unintentional errors altogether [לחם דמעה, אלון בכות].
For Edom, however, the process is entirely reversed. God first punishes their intentional crimes, but then He exposes and penalizes them for their lighter, unintentional mistakes, which were previously hidden beneath their heavier sins. This total accountability stems from the fact that the wicked rejoice in doing evil. Their joy reveals that they would have committed even their accidental wrongs on purpose if given the chance. Lacking the avenue of sacrifices for atonement, they are punished for everything [לחם דמעה, אלון בכות]. Furthermore, in stark contrast to the Israelites, when other nations experience suffering, they do not turn to repentance. Instead, they curse God, exposing the deep-seated rejection of Him in their hearts. Consequently, they are drained of all their blessings and abundance, much like a vessel that is completely overturned and emptied of its contents [פלגי מים, לחם דמעה].