שמואל ב, פרק ג׳, פסוק ל״ט

King David stands before the nation during a profound crisis, making a stark confession of his political and personal vulnerabilities. In explaining why he does not punish those responsible for Avner's murder, he admits to a deep sense of weakness. The primary approach among commentators is that David is acknowledging he is faint-hearted and afraid to provoke the murderers [מצודת דוד, מצודת ציון]. This vulnerability is closely tied to his newfound position. He feels as though he was anointed only today, like a commoner who has just risen to greatness, leaving his royal status young and fragile [רש"י, רד"ק, ביאור שטיינזלץ]. Compounding this tragedy is the timing: this very day was meant to mark the beginning of his complete reign over the entire nation, a unification effort led by Avner, but the assassination shattered those plans [רד"ק]. Conversely, there is an opinion that his self-description does not denote weakness at all, but rather serves as a formal term indicating royalty and rule [רד"ק].

Standing in sharp contrast to David's fragility are the sons of Zeruiah, who are harsh, uncompromising, and overwhelmingly stronger than him. David specifically refers to them by the name of their mother, his sister, to emphasize his deep disappointment. As his nephews, they should have shown him loyalty and protected his kingdom, even though in other contexts, linking them to their maternal lineage is actually meant to honor David [רד"ק]. Avner’s death leaves the king completely helpless, as Avner was the only figure capable of countering the massive influence of these brothers, who will now inevitably remain in control of the army [מלבי"ם].

This power dynamic raises a critical question: why does David not simply execute Joab for the murder? From a strict legal perspective, a standard court could not try Joab because the assassination lacked formal witnesses and prior warning. A king, however, possesses the absolute authority to bypass standard courts and execute criminals as a temporary measure to ensure the stability of the kingdom [מלבי"ם, מצודת דוד]. Yet, the sons of Zeruiah are so powerful that David is paralyzed. He cannot exercise his royal prerogative against them, and he even avoids mentioning Joab by name in his public address [ביאור שטיינזלץ].

Stripped of the ability to enforce true justice on earth, David is forced to leave the matter in the hands of heaven. He prays for God to repay the perpetrator according to his evil deeds. This plea aligns with the spiritual principle that a person relies on divine retribution only when earthly justice is entirely out of reach [מלבי"ם, מצודת דוד].