I have come here expecting exactly this scene. The occasion is a seminar called “Love, Sex and Marriage,” being given by Joe Beam, a Southern preacher out of the old school, a self-described “book-chapter-and-verse guy,” who runs an outfit based in Franklin, Tenn., called Family Dynamics. So I’m anticipating condemnation of American culture — especially America’s sexual culture — that has made conservative Christians feel besieged.

But then Beam, a portly, silver-haired basso profundo dressed in khaki slacks, a sweater vest and brown tasseled loafers that make him look like a retired country-club golf pro, walks to the front of the room and proceeds to tell the men in the audience how to make their semen taste better.

"For years, Christian publishing would not publish on sex," says Michael Sytsma, a Christian sex therapist with the Sexual Wholeness Ministry based in Duluth, Ga. "If they did, it was so heavily edited nothing of value was left. Now, more and more pastors are preaching about it on Sunday, though you still do not see classes in seminaries. We are seeking to do that."

Sytsma thinks preachers like Beam have seen — and even felt themselves — the impact of the sexual revolution, and realize the church has been left behind as a source of sexual information.

“Sex is a sacred subject," he says. “The church generally prefers not to talk about it. But that has a dual impact. It keeps it shrouded in ignorance and the implication is that since you are not talking about it, it’s bad.”