John Efron is the Koret Professor of Jewish History at the University of California at Berkeley. His specialty is the cultural and social history of German Jewry. His most recent book is German Jewry and the Allure of the Sephardic (Princeton University Press, 2016). Matthias Lehmann is Professor of History and Teller Chair in Jewish History at the University of California, Irvine. He has written about the history of Sephardic Jews in the Ottoman Empire and around the Mediterranean. His most recent book is Emissaries from the Holy Land (Stanford, 2014). Steven Weitzman directs the Herbert D. Katz Center for Advanced Judaic Studies at the University of Pennsylvania, where he also serves as the Abraham M. Ellis Professor of Hebrew and Semitic Languages and Literatures. A scholar of ancient Jewish culture and religion, his recent publications include a biography of King Solomon from Yale University Press and The Origin of the Jews: The Quest for Roots in a Rootless Age (Princeton University Press, 2017).