I’ll cite first a book where I have a slight personal connection.
Double Crossed: The Missionaries Who Spied for The United States During the Second World War, by Matthew Avery Sutton.
According to a review in the Washington Post, Sutton chronicles four missionaries or clergy who were in the OSS. One was John Birch, Baptist missionary in China, who gave his name to the John Birch Society.
But one was Stewart Herman, “a Lutheran minister based in Berlin.” When I was a student at the Maywood Campus of the Lutheran School of Theology at Chicago, Stewart Herman was president of the seminary. I interviewed him several times about his work as a pastor in Berlin before the war and (I think) after the war. Funny he never mentioned being a spy.

I’ll mention second an author I like.
The Lost Art of Scripture: Rescuing the Sacred Texts by Karen Armstrong. The noted historian of religion and culture writes about the role sacred texts have played in history and how they are being used today. Apparently, according to comments on the book, 20th century fundamentalism has imposed a structure on the texts that was not known in earlier times
The third is a book by the guy who wrote God’s biography.
Religion As We Know It: An Origin Story by Jack Miles. The author is a Pulitzer prize-winner who looks at how our ancestors thought about religion, how Christianity got tied to western thought and how things may be changing today.
The fourth and fifth are two books reviewed in today’s New York Times.
Who is an Evangelical: The History of a Movement in Crisis by Thomas Kidd; and
The Immoral Majority: Why Evangelicals Chose Political Power Over Christian Values by Ben Howe.
The titles tell me these should be good reading.