When it was published last year, Sheila Gregoire’s marriage book, The Great Sex Rescue: The Lies You’ve Been Taught and How to Recover What God Intended, came as a stark contrast to what many Christians learned from the church about sex and marriage.

Drawing from her own research, including a survey of 22,000 Christian women, the Canadian author affirms that sexual pleasure is for women too—and chronicles the damage done to women, men, and their relationships when people operate ...

Pew Research Center isn’t ruling out a future religious revival in America.

But given the country’s steady trends away from faith affiliation, experts don’t know what it would look like.

Analyzing surveys about religious identity and religious “switching” going back to 1972 and trying to project the American religious landscape out to the year 2070, they can’t even say what demographic signs might indicate a coming swell of conversions.

“We’ve never seen ...