While reading this post by science fiction author Mike Flynn (which I would highly suggest reading in its entirety), I came across this quote that I enjoyed in particular. :-)
Atheists and other fundies often forget about the Orthodox Church, but it is the second largest Church in Christendom. Together with the largest, the Roman Catholic, they comprise better than 63% of all Christians. Throw in the third largest - the Anglican Communion - and we've got two-thirds of all Christians, well before we get down to the more exotic and idiosyncratic sects. If I want to know "what Christianity teaches," I would be inclined to ask the Orthodox or Catholic churches, as they have near 2000 years of noodling over it. Yet when the Coynes of the world want to tell us 'what Christians believe,' they agitate over the idiosyncratic beliefs of Bill and Ted's Excellent Bible Shack, whose teachings go back to last Tuesday. Go figure.