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How does a seventeen-year-old boy withstand seduction from a powerful, beautiful woman when no one will know? The Gemara (גמרא) teaches that Yosef saw a vision of his father—meaning morality requires both parental example and a sense of life's purpose. Without these twin foundations, all moral decisions collapse into self-justification.
Rabbi Zweig explores the profound contradiction in how Rashi (רש"י) describes Potiphar's wife. In Bereishis 37:33, Rashi cites the Gemara (גמרא) that when Yaakov says "chayah ra'ah achalasu" (a wild beast devoured him), he prophetically referred to Potiphar's wife as a vicious, evil animal who would later provoke Yosef. Yet in 39:1, Rashi juxtaposes her story with Tamar's, teaching that just as Tamar acted "l'shem Shamayim" (for the sake of Heaven), so too did Potiphar's wife act with noble intentions. How can the same person be both a vicious predator and someone acting for Heaven's sake? The shiur addresses this by examining the nature of morality itself. The Torah (תורה) devotes extensive language (Bereishis 39:8-9) to Yosef's moral reasoning—he cannot betray Potiphar's trust, as everything has been placed in his hands. Only at the end does the pasuk mention "v'chatasi l'Elokim"—it violates the Noahide prohibition against adultery. Why does the Torah prioritize the moral argument over the explicit halachic prohibition? This teaches that the ultimate purpose of all mitzvos is to create moral human beings. The halachic framework exists to support and define morality.
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Bereishis 37-39 (Parshas Vayeishev)
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