Rabbi Israel ben Eliezer (c. 1698 – 22 May 1760), known as the Baal Shem Tov or as the Besht, was a Jewish mystic and healer from Poland who is regarded as the founder of Hasidic Judaism. "Besht" is the acronym for Baal Shem Tov, which means "One with the Good Name" or "one with a good reputation".

A central tenet in the Baal Shem Tov's teaching is the direct connection with the divine, "dvekut", which is infused in every human activity and every waking hour. Prayer is of supreme importance, along with the mystical significance of Hebrew letters and words. His innovation lies in "encouraging worshipers to follow their distracting thoughts to their roots in the divine". Those who follow his teachings regard him as descended from the Davidic line that traces its lineage to the royal house of David.