An exploration of the Gemara (גמרא)'s teaching that everyone is susceptible to jealousy except toward their son or student, examining when jealousy is destructive versus when it serves as a healthy protective instinct.
This shiur analyzes a profound Gemara (גמרא) in Sanhedrin that states 'Bechol Adam Miskan Chutz MiBno V'Talmido' - everyone is susceptible to jealousy except regarding their son or student. Rabbi Zweig begins by examining the apparent contradiction between this principle and Moshe Rabbeinu's jealousy of Yehoshua at the end of his life, when Moshe said 'Tov me'ah misos mikina achas' - better to die a hundred times than be jealous once. The analysis distinguishes between two types of kinah (jealousy). Destructive jealousy stems from wanting to possess what belongs to others - this is what the Mishnah (משנה) calls one of the traits that 'motzi et ha'adam min ha'olam' (removes a person from the world). However, there exists a healthy form of kinah - the desire to protect and maintain connection to what is rightfully ours. This protective kinah is actually essential, as seen in Hashem (ה׳) being described as 'Kel kana' regarding idolatry, and in the mitzvah (מצוה) of kinah regarding sotah. The shiur explains that parents aren't jealous of their children's achievements because they feel genuinely connected to their success - it doesn't represent something foreign they desire, but rather an extension of themselves. However, even parents can experience jealousy when displaced by their children, as happened with Moshe and Yehoshua when leadership was transferred. The key insight emerges through Rashi (רש"י)'s interpretation of why Aharon wasn't jealous when Moshe became leader. Unlike Moshe who held a position (melech), Aharon saw himself merely as a facilitator of the relationship between Hashem and Klal Yisrael. Since he didn't perceive himself as possessing a position, he couldn't feel displaced. This explains Hashem's response through the mashal of a king who gives usage rights rather than ownership - creating ongoing connection rather than separation. The shiur concludes with practical guidance for avoiding destructive jealousy in learning environments. When each person discovers and develops their unique capabilities while working to their maximum capacity, jealousy disappears. Instead of competition, there emerges collaboration where each person's distinct contributions complement others, creating a supportive rather than competitive dynamic.
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Sanhedrin - Bechol Adam Miskan passage
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