Ḥayyim Saul Duwayk (1858–1933), known as the Rav Sadeh, was the most influential sage of the Aleppo wing of Bet El Kabbala. In his youth, he was influenced by Nissim Harari Raful, author of ‘Alei Nahar, an early explication of Shalom Sharʿabi’s prayer intentions (kavvanot). Early in his career, Duwayk contacted Sasson Bakher Moshe, the incumbent head of Bet El in Jerusalem. At the age of thirty-two he moved to Jerusalem, cementing relations between the two communities. Renowned for his emotional intensity at the time of prayer and the bea…