Israel ben Eliezer (c. 1700-1760), known as the Baal Shem Tov (Master of the Good Name), was a healer, storyteller and spiritual teacher who lived in the Podolia region of present-day Ukraine. He left no writings — his teachings were transmitted orally and collected by disciples after his death — but his impact on Jewish spirituality was transformative and permanent.
The Baal Shem Tov's central innovations were theological and practical simultaneously. Theologically: God is not only present in the study house and the synagogue but in every aspect of existence — in the forest, in the marketplace, in the simple person's heartfelt prayer, in the apparent profanity of everyday life. Every spark of existence contains a divine spark (nitzotz) waiting to be elevated. Practically: the proper response to this understanding is joy — simcha (joy) is not merely an emotion but a spiritual practice, a way of honouring the divine presence in all things.