Chanukah, the Holocaust, and Fighting for the Sake of Heaven

Rabbi Zweig opens with a fundamental question of moral philosophy: How does a person know whether they are doing something truly moral or merely justifying immoral behavior? Everyone can rationalize their actions, yet the Torah (תורה) calls Potiphar's wife an "evil beast" even though she believed she was acting "for the sake of Heaven" based on astrological signs that she would have children through Yosef. Meanwhile, Tamar—who also acted based on a moral conviction—is praised as righteous. What distinguishes genuine morality from self-deception? The answer emerges from Yosef's response to Potiphar's wife. When she attempts to seduce him, Yosef doesn't simply invoke the prohibition against adultery—a response that would be meaningless to someone convinced she's doing a mitzvah (מצוה). Instead, he explains at length how accepting her proposition would make him a person who betrays trust: "My master has withheld nothing from me except you, his wife. How can I do this terrible thing?" Yosef's test is character-based: if an action requires you to become a disgusting person—untrustworthy, unappreciative, or immoral—then you cannot be doing it for the sake of Heaven, regardless of your rationalizations. The Taz asks why Yosef needed 33 words when he could simply have said "it's a sin." Rabbi Zweig explains that someone convinced they're doing a mitzvah won't hear "it's a sin"—you must show them the character degradation their action entails.