Lelov-Piotrkow Rebbe, Rabbi Yissachar Dov Biderman, Passes Away at 84
Hasidic leader from Lelov dies following cardiac event at mikveh; funeral arrangements pending

The Hasidic world is mourning the passing of Rabbi Yissachar Dov Biderman, the Lelov-Piotrkow Rebbe, who died Sunday afternoon following a cardiac event at his community's mikveh on Tzefania Street in Jerusalem. He was 84.
Known by his acronym "MaHaRY"D of Lelov," the rebbe led his congregation from the community's renowned beis medrash on Bar-Ilan Street, where he was revered for his approachable leadership style and devotion to preserving the Piotrkow-Lelov Hasidic traditions.
Despite prolonged resuscitation efforts and prayers from thousands of Hasidim, Rabbi Biderman returned his soul to his Creator today (Sunday).
Born on the 10th of Kislev 5702 (1941), he was the sixth son of Rabbi Moshe Mordechai Biderman, the previous Lelov Rebbe and author of the "Birkas Moshe." Following his father's passing, Rabbi Yissachar Dov assumed leadership of the community, maintaining the distinctive path of Lelov Hasidus as transmitted through generations.
Followers described the rebbe's leadership as characterized by genuine warmth toward every Jew, coupled with unwavering commitment to Torah study and spiritual growth. His tisches, Hasidic gatherings, particularly during the festivals, drew not only his own Hasidim but Jerusalem residents from across the spectrum seeking spiritual elevation.
"The rebbe wasn't just a leader, he was a father," said one follower outside the beis medrash Sunday evening. "Everyone who came to Bar-Ilan Street felt there was room for every Jew in the MaHaRY"D's beis medrash. His simplicity was his greatness."
The Bar-Ilan Street beis medrash became a beacon of Torah and Hasidus under his leadership, embodying the Jerusalem tradition of accessibility and sanctity that defined his approach.
News of the rebbe's passing spread quickly through Jerusalem's haredi neighborhoods. Synagogue gabbaim announced cessation of work, and thousands of Hasidim made their way to the Bar-Ilan Street beis medrash to pay their respects.
Rabbi Biderman is survived by sons and sons-in-law who continue in his path, along with thousands of Hasidim and admirers.
Funeral arrangements will be announced.