This is the fundamental problem, though. There's an internal consistency so long as all evidentiary evaluation is predicated on the underlying assumption that the attestations are true. Confirmation bias does not make a firm foundation for truth-seeking. Once you realize that your standard of evidence could just as easily support any number of (contradictory) belief systems (were you to start from the premise that that particular religion, not yours, was true) the whole thing begins to crumble.
You would think that putting Islam and Protestantism in the same comment would indicate to a reader that I'm well aware that the same standard supports mutually exclusive visions of reality but I guess that doesn't do enough to evangelize atheism or agnosticism or rationalism or whatevertheheck so go ahead and have a fun thread (without me)