Rabbi Sandmel lectures and publishes widely on contemporary issues in Jewish-Christian relations, Jewish-Muslim relations, religion in contemporary society, and the foundations of Judaism and Christianity in antiquity. He contributed the commentary on First Thessalonians to the Jewish Annotated New Testament (Oxford University Press, 2011). He is the co-editor of Christianity in Jewish Terms (Westview, 2000), to which he has also contributed an essay. In addition, he is the lead editor of Irreconcilable Differences? A Learning Resource for Jews and Christians (Westview Press, 2001), a study and discussion guide that focuses on core theological issues on the boundary between Judaism and Christianity.
Rabbi Sandmel is the founding rabbi of Congregation Bet Ha’am in Portland, Maine and also has served congregations in Cleveland and Chicago. From 2002-2014, he participated in the Catholic-Jewish Scholars Dialogue co-sponsored by the Jewish United Fund, the Chicago Board of Rabbis and the Archdiocese of Chicago, and served as its chair from 2011-2014.