Except, GS, those who don't accept the NT aren't bound by the NT and, I for one, wouldn't even begin to try to force it on them. Nor would I try to force the dictates of the OT on anyone, or the teachings of the Buddha or Mohammed or Lao Tzu or anyone else.

In general:

I'll settle for you being a decent, responsible human being. If you feel the need to be saved, save yourself; I've got enough trouble of my own. If you feel the need to preach, I know of several open fields where you won't disturb anyone and the mountain lions won't disturb you. If you feel the need to save me, I suggest a top-notch protective vest.