A Common Sense Atheism post on whether Christians really believe what they say they do

Here. In particular he is talking about the belief in soteriological exclusivism, which says that only Christians go to heaven and everyone else is going to roast in hell.

If we really believe this, would we spend every waking moment trying to evangelize the lost, and worrying ourselves sick that some of the people we really care about won't make it?

Back when I was an undergrad, a couple of guys by the names of Bob Prokop and Joe Sheffer convinced me that soteriological exclusivism was false, and interestingly enough, they brought up some of the same points that this atheist does.