As an Orthodox rabbi, Isaac Leizerowski has some thoughts about Rosh Hashanah and Yom Kippur sermons. The leader of Congregation Beth Midrash HaRav B’Nai Jacob in Philadelphia believes that those speeches should focus on the same themes. The High Holidays, according to Leizerowski, are not a time to talk about politics, current events or “the latest fads in society.” They are a time for self-reflection and self-improvement — a process that culminates with repentance during the Yom Kippur fast. “And everyone hopefully has the insight to be able to repair their own small world,” Leizerowski said. “All Orthodox rabbis have...