The sharp response of Simeon and Levi to their father's rebuke reveals a profound clash between the fear of existential survival and the uncompromising demand for justice and family honor. They refuse to accept the degrading treatment of their sister, vehemently objecting to her being reduced to a mere commodity to be bargained over [ביאור שטיינזלץ]. In their view, it is far better to face physical danger than to endure such profound disgrace [בכור שור]. Beyond honor, their actions are driven by a calculated strategic vision. Remaining silent in the face of such an atrocity would project severe weakness, emboldening the local inhabitants to attack their small, vulnerable family at will. By taking decisive vengeance, they establish a crucial deterrence, ensuring that their enemies will not rise against them in the future [ספורנו, אור החיים, מלבי״ם].
The brothers' response also stems from an urgent need to protect both their sister's reputation and their father's spiritual standing. Had they remained silent, the surrounding society would have naturally assumed that she had consented to the act, permanently branding her with the shameful stigma of a harlot [ביאור יש״ר, פרדס יוסף]. Furthermore, allowing her to remain and assimilate among the local population would be viewed as willing promiscuity. This moral failure would have disqualified Jacob from serving God, meaning the violent rescue was ultimately necessary to protect the spiritual holiness of their father [חתם סופר]. From a legal standpoint, the execution of the entire city is justified under the universal Noahide Laws, which strictly prohibit robbery. Because the townspeople witnessed the abduction of the young woman and failed to bring the perpetrator to justice, they became collectively liable for the death penalty [רא״ש].
At the heart of the brothers' outrage is the specific nature of the violation. The primary approach among commentators is that they are not speaking of literal harlotry, but rather the concept of being entirely abandoned and unprotected. Since the young girl was a minor and a victim of assault, she certainly did not willingly engage in promiscuity. Instead, the brothers are protesting that she was treated as ownerless property, something anyone could simply take and use at will [רש״י, מזרחי, גור אריה, שפתי חכמים, דברי דוד]. Others take the concept more literally, defining a harlot as a woman who has no one to demand justice for her suffering. By stepping forward, the brothers make it unequivocally clear that she is not such a woman, as she has family who will fiercely fight for her [ספורנו, רד״ק]. Further fueling their anger is the deceit of the city's leaders, who falsely claimed that the girl had consented. By spreading this lie, they essentially labeled her a harlot. Since the leaders acted with such deep deception, the brothers felt justified in using a deceptive strategy of their own to exact justice [הכתב והקבלה]. Additionally, under the legal framework of the time, a non-Jew could face the death penalty for forbidden relations, but might escape punishment if the woman was deemed a harlot. The brothers were incensed that the perpetrator believed he could exploit this loophole, treating her as a harlot to avoid the consequences of his crime [רלב״ג].
The brothers' intense emotional reaction is directed primarily at the perpetrator, questioning how he could dare commit such an atrocity. However, one perspective suggests that their furious question is actually hurled at Jacob himself, challenging whether their own father would simply stand by and allow his daughter to be treated this way [קונטרס חיבה יתירה]. The precise language they use to describe the event carefully avoids any implication of mutual consent. They emphasize that she was directly turned into an abandoned object, completely stripping away the notion that she was a willing participant [רא״ש, ריב״א, מזרחי, לבוש האורה]. By focusing on her as their singular, deeply cherished sister, they highlight her unique value to the family [חזקוני, מנחת שי]. Ultimately, by framing the defense around their identity as her brothers, rather than waiting for their father to act, they demonstrate that they have assumed absolute, exclusive responsibility to protect her and avenge her honor [קונטרס חיבה יתירה].