Raphael Abraham Shalom Sharʿabi (1775–1827), known as the RA"Sh and as Rav Abraham Shalom Ḥasid (Heb. the saint) because of his piety, was the grandson of the influential kabbalist Shalom Sharʿabi and the son of Hezekiah Isaac Mizraḥi Sharʿabi. Abraham Shalom headed the Bet El yeshiva from 1808 until his death and was one of the first major redactors of the linguistic mysteries of the Bet El system of Kabbala. His Divre Shalom, a theoretical work that details the practices of the Bet El community, is still one of the most useful volumes in the library of that tradit…