The impending downfall of Edom brings with it a sudden and total loss of the very traits that defined the nation for generations. Historically, the descendants of Esau were famous for their abundance of wise thinkers and mighty warriors, a legacy stemming from Isaac’s ancient blessing that Esau would live by his sword [רד״ק, צאינה וראינה]. Yet, when disaster finally strikes, these defining strengths will completely vanish.
The exact timing of this collapse is a subject of discussion. The primary approach among commentators is that this serves as a general description of the day Edom falls from power [מצודת דוד, ביאור שטיינזלץ]. However, [מלבי״ם] argues that this refers exclusively to the End of Days. He points out that during previous historical defeats, Edom always managed to retain its wise men and warriors. It is only during its final, ultimate judgment that this wisdom will be permanently erased.
When that moment of truth arrives, the nation's great thinkers will be entirely useless, utterly incapable of saving their people [אבן עזרא]. Stripped of their usual intellect, they will lose the ability to invent battle tactics or defense strategies. Instead, they will walk into their own destruction completely helpless, unable to take any action to stop it [מצודת דוד, ביאור שטיינזלץ].
The total erasure of the nation's intellect is emphasized through a shift in how this loss is described. Some view the expanded description simply as a poetic repetition, using different words to reinforce the certainty of their ruin [מצודת דוד]. Conversely, [מלבי״ם] sees a deliberate escalation in both the type of intellect lost and the specific location affected. He notes that the loss of understanding represents the destruction of a higher level of thought—the specific ability to analyze and deduce new conclusions. Furthermore, while the general loss of wisdom applies to the entire country, this deeper loss of understanding strikes directly at the capital city and the seat of government, ensuring that the nation's leadership is left entirely without guidance.