The Nature of Oaths: How Swearing Defines Reality and Identity

This shiur from Parshas Vaeira 1997 explores the profound concept of oaths (shevuos) through the lens of God's promise to redeem the Jewish people from Egypt. Rabbi Zweig begins with a fundamental question: At the end of last week's parsha, Moshe complains to God that His mission has only made things worse for the Jews—Pharaoh increased their workload to unbearable levels. God's response opens this week's parsha with "Va'era el Avrohom, el Yitzchok v'el Yaakov"—I appeared to the forefathers—and the Midrash explains that God swore to redeem the Jewish people. But this raises a crucial problem: if God already told Moshe last week that He would redeem them, why does swearing make a difference? The Torah (תורה) itself states "Lo ish Kel viyechazev"—God is not a man that He should lie or change His mind. So what does it mean for God to swear? Rabbi Zweig develops the principle that an oath is fundamentally different from a promise or statement. A regular statement creates an obligation, but all obligations exist within a context of competing priorities. If you promise to attend a simcha but your child becomes sick, you haven't lied—your obligation to attend was always contextual within your other responsibilities. Similarly, if someone borrows money expecting to repay it from a particular source that falls through, they haven't necessarily been dishonest, though they are still obligated to find another way to repay (and borrowing from someone else without reasonable means of repayment would constitute theft according to Rabbeinu Yonah).