Marcy has had a lifelong passion for Jewish worship and liturgy, and the Hebrew language that supports them, having been raised in Judaism. She has taught Hebrew for MSI since its inception, and has previously taught Hebrew for MJTI. She is also MSI's main instructor on the Jewish Holidays. Marcy has played an active role in several Messianic Jewish ministries including the Union of Messianic Jewish Congregations, the Association of Messianic Believers, and Chevra USA. Moreover, she is a long-term member of the MSI Board. Marcy is the Liturgist for Beth Messiah Congregation, where she also trains Bar and Bat Mitzvah students. She is currently a graduate student at Gordon-Conwell Theological Seminary studying for an MA in Biblical Languages.