Christianity's Dangerous Idea: The Protestant Revolution; A History from the Sixteenth Century to the Twenty-First, by Alister McGrath, has been one of my favorite (and most frequently revisited) books during this quincentennial of Protestantism’s great Gospel reclamation. It is a remarkable retelling of a sprawling tale across all the years and all the miles, including fascinating profiles of a wildly varied cast of characters: from Luther and Calvin to Bach and Milton. Highly recommended.
