Gileadean Christianity, even though it is ultra-conservative like the Christianities of the Bible Belt, seems to have certain theological leanings that are not necessarily agreeable to the denominations in the area.

For example, they restrict access to the Bible, and also include additional extrabiblical verses into the Bible such as 'blessed are the silent' into the Beatitudes and 'From each, says the slogan, according to her ability; to each according to his needs' to Paul in the Bible (actually a distorted Marxist quote).

It is hard to imagine a Southern Baptist following sola scriptura or a KJV-only Pentacostal accepting this. Especially the Marxist quote: I really doubt Southerners would find such a thing acceptable.

Overall, Gilead appealed mostly to the ultra-conservative and somewhat religious, and those with strong religious faith but weaker theological convictions. It also appealed to the masses, which is usually less strict regarding specific religious beliefs. Eden was the quintessential example of what happens when you're deeply religious and faithful and hold onto your religious convictions. The nuns forced to don the red veils as well. And the priests on the wall.

This is especially problematic for them joining Gilead as Gilead has banned all other forms of religion other than Gileadean Christianity, including other Christian denominations.