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Why does the Torah (תורה) emphasize that Avrohom washes his guests' feet before they enter his home, while Lot allows them to enter first? The shiur explains that before Bris Milah, Avrohom himself invited guests in first to make them comfortable, despite concerns about dust of idol worship. After his circumcision, Avrohom's complete transformation required total separation from even traces of avodah zarah—teaching that Bris Milah creates an absolute identity break from non-Jewish culture.
The shiur explores a subtle textual difference between Avrohom and Lot's hospitality. When guests arrive at Avrohom's tent, he tells them to wash their feet and then relax; when they arrive at Lot's house, Lot invites them in first and then to wash. Rashi (רש"י) explains that Avrohom suspected they were Arabs who worshiped the dust on their feet, so he insisted on washing before entry. But Lot, less careful, allowed them in first. The central question is why this seemingly minor difference matters when the Torah (תורה) has already revealed far more serious flaws in Lot's character. Chazal tell us that Lot moved to Sodom specifically because he wanted immorality, and that Hashem (ה׳) wouldn't speak to Avrohom while Lot was with him. Why does the Torah need to add this small critique about foot-washing?
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Vayeira 18:4-5
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