Express skepticism regarding the use of religious texts to justify certain actions, and express a personal opinion that religion mainly consists of moral teachings about treating others well.
I don't disagree, but my larger point is that I keep seeing these devout religious people cherry picking bits of the bible to justify their actions.  Personally, I think most religion boils down to "don't be a jerk", beyond that all else is just either definitions of what a jerk is, or ceremonies and traditions.