This contribution to the global history of ideas uses biographical profiles of 18th-century contemporaries to find what Salafist and Sufi Islam, Evangelical Protestant and Jansenist Catholic Christianity, and Hasidic Judaism have in common. Such figures include Muḥammad Ibn abd al-Waḥhab, Count Nikolaus Zinzendorf, Jonathan Edwards, John Wesley, Jean-Jacques Rousseau, and Israel Ba’al Shem Tov. The book is a unique and comprehensive study of the conflicted relationship between the “evangelical” movements in all three Abrahamic religions and the ideas of...