And yet there is a silent majority who experience a faith that is attractively marked by combinations of fervor and doubt, clarity and confusion, empathy and moral demand.

For example, Audrey Assad is a Catholic songwriter with a crystalline voice and a sober intensity to her stage presence. (You can see her perform her song “I Shall Not Want” on YouTube.) She writes the sort of emotionally drenched music that helps people who are in crisis. A surprising number of women tell her they listened to her music while in labor.

She had an idyllic childhood in a Protestant sect prone to black-or-white dichotomies. But when she was in her 20s, life’s tragedies and complexities inevitably mounted, and she experienced a gradual erosion of certainty. …

She came to feel the legacy of millions of people who had struggled with the same feelings for thousands of years. “I still have routine brushes with agnosticism,” she says. “I still brush against the feeling that I don’t believe any of this, but the church always brings me back. …I don’t think Jesus wants to brush away the paradoxes and mysteries.”