Judaism makes the bold argument that the very concept of a religion of ‘Judaism’ is an invention of the Christian church. The intellectual journey of world-renowned Talmud scholar Daniel Boyarin, this book will change the study of “Judaism”—an essential key word in Jewish Studies—as we understand it today. Boyarin argues that although the world treats the word “Judaism” as appropriate for naming an alleged religion of the Jews, it is in fact a Christian theological concept only adopted by Jews with the coming of modernity and the adoption of Christian languages.