מלאכי, פרק ב׳, פסוק י׳

After addressing failures related to sacrifices, the prophet shifts his focus to a harsh social and moral critique regarding marital loyalty and the sanctity of the family. As the Israelites returned from exile, a tragic trend emerged. The harsh sun during their journey had damaged the physical beauty of the Jewish women. In response, their husbands rejected them, casting them out in tears, and chose to marry foreign women instead [מצודת דוד, אבן עזרא, אברבנאל]. These new foreign wives were elevated to the status of mistresses of the household, while the Jewish wives were degraded and treated like mere maidservants [מלבי״ם, אברבנאל].

This behavior shattered two fundamental bonds that united the nation. The first is a physical and national unity, rooted in a shared ancestry. Most commentators identify this common ancestor as Jacob, from whom the entire nation descends [אבן עזרא, רד״ק, אברבנאל], while others suggest it traces all the way back to Adam, highlighting a basic human and familial closeness [מצודת דוד]. The second bond is a spiritual and religious unity. The entire nation shares a belief in one God, standing apart from other nations and their foreign beliefs [מלבי״ם, רד״ק, אברבנאל]. This spiritual closeness stems from the idea that all of their souls originate from the exact same pure, divine source [מצודת דוד].

Against the backdrop of this profound double connection, abandoning a spouse is an act of deep betrayal, representing both a crime and a rebellion [מצודת ציון]. This treachery breaks the mutual commitment to marry within the nation [ביאור שטיינזלץ]. Furthermore, when a husband turns his back on his wife, he is betraying someone who is essentially his sister, a partner who shares his physical and spiritual heritage [מצודת דוד, אבן עזרא].

Ultimately, this betrayal cancels and breaks a sacred covenant [מצודת ציון]. The primary approach among commentators is that this refers to the covenant made at Mount Sinai and the acceptance of the Torah, which strictly forbids intermarriage and demands absolute loyalty to one God [רש״י, אבן עזרא, מצודת דוד]. Alternatively, this broken agreement refers to the moral tradition established by the Patriarchs themselves. Abraham, Isaac, and Jacob lived with moral discipline and never betrayed their wives by taking an additional spouse without their clear consent [רד״ק]. In the end, damaging the unity of the family inevitably shatters the religious unity of the nation and destroys the sacred covenant between God and His people [מלבי״ם, אברבנאל].