If kephale does not mean a person’s thoughts, and thereby the direction of the body, just how do you say “thoughts” in Greek. Try kidneys.
Michael Kruse has an excellent post on kephale and the household codes. I would quote some of it but I don’t want people to forget to offer their revisions to the TNIV. I have made a post there which I hope will be included. Not the end of the world if it isn’t.