Revision as of 12:59, 22 June 2026 by Raphaelwilmowsky(talk | contribs)(Created page with "The holy R' '''Mordechai Posner''' was a brother of the Alter Rebbe, born to Rabbi Yisroel Baruch Posner and his mother the Rebbetzin Rivka. The Tzemach Tzedek said of him: "He was a wondrous sharp mind, with a straight and penetrating analytical sense. When he would study a topic he would go through it five or six times, and from one pass to the next he would produce new insights with extraordinary sharpness — like on...")
