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Why does saying Vayechulu on Shabbos (שבת) bring forgiveness of sins? The shiur explains that reciting Vayechulu makes us partners in creation — and when we own something, we focus beyond ourselves. This outward focus, not the mitzvah (מצוה) itself, triggers forgiveness; the same mechanism operates in marriage, conversion, and leadership. Shabbos is therefore the ideal time to discuss shidduchim, hire teachers, and even negotiate tuition — not just because we have free time, but because Shabbos cultivates a focus on others' needs rather than our own honor.
The shiur opens with a Gemara (גמרא) teaching that one who recites Vayechulu on Shabbos (שבת) becomes a partner with Hashem (ה׳) in creation, and angels immediately declare, "Your sins shall depart from you; your inadvertent sins shall be forgiven." This raises a sharp question: mitzvos do not erase sins; sins require repentance. What, then, does it mean that the angels promise forgiveness simply because one recited Vayechulu? Rabbi Zweig then broadens the question by introducing three other cases in which the Gemara states that sins are forgiven: (1) when a person gets married, (2) when someone converts to Judaism, and (3) when someone is appointed to a position of leadership. In each case, no act of teshuvah is mentioned — yet the Gemara declares forgiveness. What unifies these three cases? And how does Vayechulu on Shabbos fit the same pattern?
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Shabbos 119b
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