I work for a Christian nonprofit. (gasp!) I work for them because I believe in helping the less fortunate. I am surrounded by Christians all day at work. Most of them are intelligent, rational people, except when it comes to their beliefs. I 'came out' as a non Christian after about a year of working there. Some were shocked, some tried to convert me, I got a lot of invites to church. Even a few I'll pray for you responses. I took them for what they were, concern for my well being. Even if it was a bit twisted from my point of view.
Over the course of working there I have had the opportunity to 'hold court' a few times in the break-room discussing various themes of their religion. What turns out as no surprise to me, but a great surprise to them, I know much more about the Bible than most of the Christians who volunteer there. I have had people leave the room crying, even had a few people yell at me. (I find these people later and console them, letting them know I did not set out to upset them, but they had started the conversation, and maybe you shouldn't ask things you don't want to know, or can't accept. I tell them to remember, life is like a box of chocolates, you never know whats on the inside until you bite into it or unwrap it. I hate this metaphor, but most people immediately understand it.)
During the course of 'holding court', pointing out inconsistencies in their beliefs, I tell them if they don't believe what I tell them, to please ask their pastors. I get my information from the same sources their pastors learned from in theology school. College level Bible classes can be very enlightening for most people entering seminary. I have seen people cry openly in class when their beliefs are challenged by applying biblical criticism to their 'sacred' texts.
I'm not sure what the point of this post is... other than to tell you that I work for a Christian nonprofit. Is it for everyone? nope. But I love my job. I just do like the liberal Christians who work there, I ignore the crazy Evangelicals when possible, and correct them when they are wrong. (not that they ever see they are wrong.) I have even asked a few of the more crazy ones not to come back, because they are disruptive to the work we are doing. This has the effect of really chapping their butts. Here is a nonbeliever, telling them they are disruptive to their Christian organization. No malice, just the truth. I love the truth.