Why argue it? Except for the mental exercise, I mean. To each his own, live and let live, and all that jazz.
You're not going to convince anyone that their dearest beliefs are wrong, nor are you going to open a closed mind. So why bother?
My mother is a devout Seventh Day Adventist, I gave up listening or attempting logical debate years ago.
I always just say....."ok", then go on about my merry way
Stormie