Aryeh Löb ben Mordecai Ha-Levi Epstein was a Polish rabbi . At first he refused to become a rabbi, preferring to devote himself entirely to study, but in 1739 he was forced by poverty to accept the rabbinate of Brestovech,
Polish rabbi; born in Grodno 1708; died in Königsberg, Prussia, June 26, 1775. At first he refused to become a rabbi, preferring to devote himself entirely to study; but in 1739 he was forced by poverty to accept the rabbinate of Brestovech, Lithuania, and in 1745 he became rabbi of Königsberg, where he remained until his death. He corresponded with Elijah, gaon of Wilna, and with Jonathan Eybeschütz, with whom he sided in the quarrel about amulets.
He is the author of "Or ha-Shanim," on the 613 commandments (Frankfort - on - the - Oder, 1754); "Halakah Aḥaronah" and "Ḳunṭres ha-Ra'yot" (ib. 1754; Königsberg, 1759); "Sefer ha-Pardes," in three parts—(1) on the Shema' and the observance of Sabbath, (2) sermons, (3) funeral orations (ib. 1759). Several other cabalistic and halakic works from his pen are mentioned in his own works or by his biographer. A prayer which he composed on the occasion of the dedication of a new synagogue in Königsberg (ib. 1756) is found in the Bodleian Library. Annotations by him and by his son Abraham Meïr are published in some of the later editions of the Babylonian Talmud. He is called "Levin Marcus" in Solowicz's "Gesch. der Juden in Königsberg," Posen, 1857.
May the merit of the tzadik Rabbi Aryeh Lieb ben Mordecai Ha-Levi Epstein will protect us all. Amen