High Quality Content by WIKIPEDIA articles! The Rabbinical Seminary International (RSI) is a rabbinical seminary located in New York City. RSI was founded in 1955 by the Hungarian Hasidic Rabbi and Kabbalist Dr. Joseph H. Gelberman, a graduate of City University of New York and Yeshiva University, who is also known as a pioneer in inter-religious dialogue. The Rabbinical Seminary International is a transdenominational rabbinical seminary in the Neo-Hasidic tradition. Rabbi is the term in Judaism for a religious teacher. The word rabbi derives from the Hebrew root word , rav, which in biblical Hebrew means great in many senses, including "revered." The word comes from the Semitic root R-B-B, and is cognate to Arabic rabb, meaning "lord" (generally used when talking about God, but also about temporal lords). As a sign of great respect, some great rabbis are simply called "The Rav."