A new survey by the Pew Forum on Religion and Public Life found that most religious Americans don't know shit about their own religions. Sample fun finding: "A majority of Protestants, for instance, couldn't identify Martin Luther as the driving force behind the Protestant Reformation."
Of course we know more about religion. We studied it. That's why we are atheists!
When I was a small boy living in New Hampshire farming country, I attended the local congregational church and sang in the choir. As a gift for singing in the choir I was given a bible. That was their big mistake, because I read the thing, cover to cover. And I started asking questions. And that was when I was asked to leave!