Rabbi Leon Klenicki was a renowned scholar, theologian, and interfaith pioneer. The Anti-Defamation League’s longtime director of Interfaith Affairs and co-Liaison to the Vatican, Klenicki received many awards for his work, and was made a papal knight of the Order of St. Gregory the Great by Pope Benedict XVI. Klenicki died in 2009.

Eugene Fisher is the Associate Director of the U. S. Conference of Catholic Bishops' Secretariat for Ecumenical and Interreligious Affairs and the author of numerous books and scholarly articles on the subject. Rabbi Leon Klenicki was the Anti-Defamation League's Director of Interfaith Affairs and Co-Liaison to the Vatican.