One of the interesting things that I have learned in my time on the SDMB is that some extreme Fundamentalist Christians in the mold of Jack Chick believe that Roman Catholics are not Christian. I’ve also seen sites purporting to explain why other religious groups that are theologically out of the mainstream of Protestantism are not truly Christian (Mormons, Jehovah’s Witnesses, Christian Scientists, Unitarian Universalists, etc.).
Something I have not seen in my (admitedly cursory) scans of those sites is any discussion of the third major branch of Christianity, Eastern Orthodox (Greek Orthodox, Russian Orthodox, etc.). I cannot imagine that Jack Chick and others of his mindset believe themselves to be in full doctrinal communion with the Orthodox Christian Church.
Does anyone have any information about how extreme Fundamentalists feel about the Orthodox Church? Does anyone know why they seem to have missed this major Christian group in their efforts to differentiate themselves from those who don’t hold their precise beliefs?
(My speculation as to the second question is that their focus on religious groups that are significant or growing in the United States and their failure to examine the history of Christianity after New Testament times blinds them to the fact that there is another major wing of Christianity to rail against.)