This book investigates the historical and philosophical motivations behind the 1656 excommunication of Baruch Spinoza from the Portuguese-Jewish community of Amsterdam. Steven M. Nadler, a prominent scholar of seventeenth-century philosophy, utilizes archival records and the intellectual context of the era to examine the specific theological transgressions that led to the cherem. By situating Spinoza within his cultural milieu, Nadler argues that the philosopher's radical ideas were not merely abstract departures from tradition but were deeply rooted in the tensions of his specific religious environment.

Scholars and historians frequently cite this work as a definitive account of the social and intellectual climate surrounding Spinoza's expulsion. The text is noted for its clarity and ability to make complex theological disputes accessible to both academic and general readers.