Rabbi Seth Wax

Seth Wax – Rabbi
As a student of Judaism, Buddhism, and other spiritual traditions, Rabbi Seth seeks to create new opportunities for translating and sharing insights among religions to help himself and others live with more depth, insight, ecstasy, wisdom, calm, and compassion, and to help us face the reality, fragility, and joy of life.

He became rabbi at Congregation Mount Sinai in 2013. A native of Sharon, Massachusetts, he is a graduate of Hebrew College Rabbinical School, a pluralistic, independent program in Newton, Massachusetts. Prior to entering rabbinical school, he received a Master’s of Theological Studies degree in Buddhist Studies from Harvard Divinity School and a BA in Religion from Columbia University. Rabbi Seth also worked at Project Zero at the Harvard Graduate School of Education as a researcher on ethics and professions, authoring a study on spirituality and work.

Rabbi Seth is particularly interested in the ways in which spiritual traditions can enrich each other and help people become more mindful, wise, and compassionate in their daily lives.

You can reach him at rabbiwax@gmail.com and at 718-875-9125.




Rabbi Joseph Potasnik

Joseph Potasnik – Rabbi Emeritus
Rabbi Potasnik served as spiritual leader at Congregation Mount Sinai for 42 years. He is currently Executive Vice-President and former President of the New York Board of Rabbis, the largest interdenominational body of its kind. He is also co-host of Religion on the Line, WABC 770 AM’s longest running talk radio program, which airs every Sunday from 7:30am-10:30am. Rabbi Potasnik has served as Chaplain of the New York City Fire Department, the Fraternal Order of Police, and the New York Press Club, maintaining a high profile in public affairs in the City.

A native of Lynn, Massachuetts, Rabbi Potasnik received a BA from Yeshiva College and an MS from the Bernard Revel Graduate School of Yeshiva University. He received rabbinic ordination from the Rabbi Isaac Elchanan Theological Seminary at Yeshiva University in 1972, and a JD from Brooklyn Law School. He is the proud father of Harrison Potasnik.

Rabbi Potasnik can be reached at joseph.potasnik@gmail.com.


Marlene Antebi

Marlene Antebi – Director of Education
Marlene is a talented and energetic educational leader who is dedicated to the continuity of Jewish education and community. As a veteran director of youth programming, she is committed to creating a positive experience for students in Hebrew school and in a Jewish environment. She strives to provide students with engaging, enriching, and interesting programs and curriculum, giving them the opportunity to create art projects, develop family events and listen to students needs. She is the mother of four and lives in Brooklyn.

Marlene can be reached at chicco711@aol.com.


Bob Kahan

Bob Kahan, Administrative Director
Bob comes to CMS with a diverse background. He was the first Executive Director of Temple Am Echad in Lynbrook, Long Island, where he was responsible for establishing administrative procedures for two newly-merged congregations; Event Coordinator/Office Manager for Temple Israel of the City of New York, where he coordinated facility use and scheduling among other duties;  Director of Event Programming for the Williams and Princeton (Alumni) Clubs, establishing and coordinating event and social calendars; and an editor for DC Comics, where he grew a collected edition publishing program to lead the industry. He was also a lighting designer and stage manager for modern dance and theater, and is currently very active in alumni affairs for his alma mater Purchase College. He is also a fledgling writer, a longtime resident of Park Slope, has two cats called Buffy and Knightly.

You can reach him at bobkahancms@gmail.com and at 718-875-9124.


Eduardo Pardave

Eduardo Pardave – Custodian
Eduardo came to CMS in September 1999 and has been a beloved member of the synagogue family ever since. He has extensive experience in many areas of building maintenance that he brings to his work.