"A long and happy marriage." It sounds like the end of a fairy tale--an illusion that modern times have exposed.

And it is, if marriage depends on a constant stream of romantic emotion, or even on copious amounts of time or money. Thank the Lord, none of those are necessary. Two thousand years ago, Paul gave women the key to a successful marriage, and it can be summed up in two words: unconditional respect. It's not popular. It doesn't sound fair. It can be hard to imagine.

But it works.

Nina Roesner has led countless women through this...