Following a rather heated, unplanned discussion about Christianity/ God with Christian friends of ours (we are atheists) I have gathered that they believe the following: that not believing in their God is the ultimate Sin and that no matter how you live your life otherwise, ie. if you are good, friendly, responsible, caring, law-abiding people but don't believe in their God you will still go to Hell when you die. It would seem that basically the only thing that matters is that you believe in their God, not how you otherwise live your life. Therefore non-Christian murderers/ criminals, etc are on a par with us in their eyes as none of us believe in God (the ultimate Sin) and we will all therefore go to Hell.
Surely if there is a God He would not be so awful and unwavering? And surely our friends cannot think of us as the ultimate Sinners or they wouldn't associate with us?