Whether you are a politician caught carrying on with an intern or a minister photographed with a prostitute, discovery does not necessarily spell the end of your public career. Admit your sins carefully, using the essential elements of an evangelical confession identified by Susan Wise Bauer in The Art of the Public Grovel, and you, like Bill Clinton, just might survive.

In this fascinating and important history of public confession in modern America, Bauer explains why and how a type of confession that first arose among nineteenth-century evangelicals has today become...