Betrayal by trusted friends is often more devastating than a direct attack from an enemy. True ruin does not always come from the overwhelming strength of outside forces, but rather from a carefully planned deception by the very people sitting at one's own table, who exploit deep trust to bring about a downfall.
The destruction begins with those bound by treaties. These allies offer an escort, but the nature of this journey is debated. Some explain that these partners, who were obligated to provide military support, actively encouraged the nation to go to war. They marched together to the border, only to abruptly abandon their supposed friends to face the enemy completely alone [מצודת דוד, מלבי״ם]. A harsher perspective suggests that the allies themselves turned into attackers at the border [רש״י], or even actively handed the people over to the enemy, all while shedding fake tears and pretending to mourn their tragic fate [רד״ק, צאינה וראינה]. Conversely, another view maintains that the allies simply lacked the power to help, doing nothing more than walking alongside the fleeing captives [אבן עזרא].
The betrayal deepens through the actions of trusted advisors. Through incitement and illusion [מצודת ציון, שטיינזלץ], these inner circles lured their leader into battle. They stripped away any natural caution, and once their advice was accepted, they succeeded entirely in their plot to bring about his defeat [רש״י, מצודת דוד, מלבי״ם].
The treachery reaches the most intimate circle, targeting the leader through the very people who depend on him for their daily livelihood. Most commentators agree that these dependents secretly laid a trap, planning destruction right under their host's nose without raising any suspicion [רד״ק, מצודת דוד, שטיינזלץ]. An alternative interpretation suggests that these dependents acted as false healers. They presented themselves as a soothing bandage, pretending to cure the nation's wounds and save the land, but their supposed aid was entirely fraudulent [מלבי״ם]. Looking at this through a historical lens, another approach traces this vulnerability back to Esau's original hunger. Just as Jacob used bread and lentil stew to exploit Esau's weakness, the very food that sustained him became the blow that cost him his birthright [רש״י].
Ultimately, the tragedy is sealed by a profound loss of insight. Despite the web of deceit spinning around him, Esau was stripped of his usual wisdom, entirely failing to grasp the reality of the situation or defend himself against his own allies [רד״ק, מצודת דוד, שטיינזלץ, צאינה וראינה]. The narrative shifts its perspective to emphasize just how completely empty of understanding he had become [רד״ק, אבן עזרא]. Alternatively, this lack of substance does not refer to Esau's mind, but rather to the false remedies offered by his allies; their promised solutions were completely hollow and offered no real salvation [מלבי״ם].