I have always loved a good mystery. Maybe that’s why The X‑Files hooked me, every episode held a new puzzle waiting to be uncovered. In the New Testament, the Apostle Paul uses that same word, mystery, to describe marriage (Ephesians 5:21–33). And like any true mystery, marriage is multilayered and nuanced. Paul begins with a new idea, mutual submission. Husbands and wives, he teaches, are called to submit to one another. To modern ears, that ma…