Yonatan Eybeschutz

Jonathan Eybeschutz was one of the most brilliant and admired Torah scholars of his age — a famed Talmudist, halachist, and kabbalist whose Prague lectures drew students from across Europe and whose works Urim v'Tumim and Kreti u-Pleti remain classics of Jewish law. Yet his name is also bound to one of the most painful disputes in modern Jewish history: a decades-long suspicion that he secretly belonged to the underground following of the false messiah Sabbatai Tzvi.

The shadow first fell in 1725, when a traveling book-peddler carrying Sabbatian manuscripts was arrested in Germany. Among the confiscated writings was a radical kabbalistic tract beginning Va'avo Hayom el Ha'ayin (“And I Came This Day unto the Fountain”), which witnesses attributed to the young “Rabbi Jonathan of Prague.” Several rabbinic courts privately suspected him but declined to name so prominent a figure publicly. Eybeschutz explained that he had only drawn close to Sabbatians “to inspect their schemes and reveal their secrets,” publicly cursed the sect, and issued his own ban against it — and for the next twenty-five years the accusations fell silent.

They returned with full force in the 1750s, after Eybeschutz became rabbi of the “Three Communities” of Altona, Hamburg, and Wandsbek. Rabbi Jacob Emden — who became his fiercest opponent — charged that the protective amulets Eybeschutz wrote contained concealed Sabbatian messianic formulas. The clash grew into one of the bitterest feuds in rabbinic history, splitting communities across Europe and drawing in rival rabbis and even government authorities. Eybeschutz defended himself in his apologia Luhot Edut (1755) and was backed by many leading rabbis of his day.

The question was never settled and is still debated. Traditional authorities have long maintained his complete innocence — holding that the author of such towering works of Jewish law could not have written a heretical text, and viewing the affair as a tragic personal feud. Much of modern academic scholarship, by contrast, concludes that he did compose Va'avo Hayom el Ha'ayin. What is beyond dispute is his genius as a halachist and the depth of the wound the controversy left on the Jewish world of his time.