Idolatry, or its Hebrew equivalent Avodah Zarah¸ is a fundamental feature of a Jewish view of other religions. All religions must pass the test of whether they are compliant with a Jewish view of religions as being free from the worship of another God. With the advance in interfaith relations, positions have been affirmed that clear most major contemporary religions from the charge of idolatry. What remains of “idolatry” once it no longer serves as a tool for evaluating other faiths? Does the category continue to have theological appeal? What are its internal uses? A cadre of Jewish scholars and thought leaders explore in this volume what the continuing relevance of “idolatry” is and how it might continue to inform our religious horizons, allowing us to distinguish between good and bad religion, both within Judaism and beyond.