This introduction to Israelite religious teachings builds on Rabbi Hillel, who conveys the essence of Judaism while a questioner stands on one leg: "What is hateful to you, do not do to your neighbor: this is the whole law; the rest is commentary, go and learn it." Here, the foundations of Judaism are summarized succinctly. Brief source quotations, primarily from the Bible, provide meaningful, clear, and precise insights into Judaism—everything one should expect from an introduction.