Overview
- He collapsed while immersing in the private mikveh at the Lelov Beis Medrash on Tzefania Street in Jerusalem on Sunday.
- Emergency responders carried out prolonged resuscitation efforts before pronouncing him dead at the scene.
- Biderman led the Kedushas Mordechai Lelov beis midrash on Bar-Ilan Street in Jerusalem.
- Born in Jerusalem in 1941, he studied in a Belzer cheder and at the Lelov yeshiva before marrying.
- He devoted his life to Torah study, earned a living writing Sifrei Torah, and is survived by his family and by brothers who lead the Lelov–Nikolsburg and Lelov Ezrat Torah courts.