Sexual Obedience Outside Scripture

This paragraph stood out for me: Sexual Obedience Outside Scripture:

"For example, the apostle Paul says nothing about video-recording a marital sex act on your cell phone. This is because he wrote to the Ephesians, to the Galatians, and not to the Idiots. If he were writing to the Idiots, he might have felt constrained to mentioned it. Oh, no, you might reply, feeling a little stung by my insensitive use of the word Idiot with an upper case I, you are your wife are being "very careful." Very careful. I see. So careful that when you both die in a car wreck nobody is going to go through your effects?"