The Shelah is a consummate scholar who demonstrates mastery in every aspect of rabbinic learning, to wit, halakhah and talmudic jurisprudence, homiletics and biblical exegesis, philosophy and ethics, and above all else the esoteric tradition known as the Kabbalah. Horowitz combines an extensive knowledge of talmudic-halakhic Judaism and kabbalistic lore and thereby forges a synthesis that he presents as the basic reality of Jewish religiosity.