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Why did Hashem (ה׳) need to separate light from darkness if both existed anyway? The separation created fixed day-night cycles that allow humans to fully access both physical vitality (through sight during day) and spiritual connection (through darkness at night). This explains why Shabbos (שבת) begins with sublime Friday night zemiros but continues with substantial daytime meals, and why holidays start at night with inner feeling before outward expression.
This shiur provides a profound analysis of the verse "And there was light" from Parshas Bereishis, focusing on Rashi (רש"י)'s second interpretation that treats light and darkness as literal rather than metaphysical phenomena. Rabbi Zweig addresses three fundamental questions raised by Rashi's commentary: What was problematic about light and darkness being mixed together (b'irbuvya)? What does it mean that God saw the light was "good"? And why was darkness necessary if light is good? The answer centers on the fundamental difference between day and night in human experience. Drawing from the Gemara (גמרא)'s teaching that "a blind person is considered like a dead person," the shiur explains that sight connects us to our physical existence. Light enables us to see and thereby feel control over our bodies, creating a sense of vitality and ownership over our physical selves. The word "tov" (good) parallels "chaim" (life), as seen in Parshas Nitzavim's pairing of "life and good, death and evil."
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Bereishis 1:3-5
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