Rabbi Ruth Langer, PhD, is professor of Jewish studies in the Theology Department at Boston College, where she also serves as associate director of its Center for Christian-Jewish Learning. She received her PhD in Jewish liturgy and her rabbinic ordination from Hebrew Union College Jewish Institute of Religion. She contributed to Who by Fire, Who by Water Un'taneh Tokef and We Have Sinned: Sin and Confession in Judaism Ashamnu and Al Chet (both Jewish Lights).