Did you read it? I understand that it is long, but it will more than repay you with its insight and wisdom, whether you're religious or not.
You mentioned many things that you didn't care about that people might use to justify their particular faith. You did not mention, among those things, the practice of textual analysis. But now, when a tool of rationalism, such as textual analysis, is invoked, you dismiss it as not being adequate to the religious task. So if we cannot use irrationalism, and if we cannot use rationalism, then where else can we turn?
Didn't mean to ignore you. I did read that piece, and some others about Auerbach's piece. I haven't yet synthesized that with this topic, though. It seems Auerbach's article is one of literary criticism, with an emphasis on realism, and while there is textual analysis being done it's being done in a literary fashion. And while literary analysis can, of course, be rational it's not, for lack of a better term, scientific.
Anything can be used to justify one's faith. Heartburn, migraines, gas, death of a loved one, recovering from cancer. My problems arise when people try to use their holy text as either a history book or a science book (geology, astronomy, biology, etc.). The earth isn't 10,000 years old just because the Christian bible says so; the earth wasn't covered with water just because the bible says so. For that matter, Jesus didn't walk on water or come back from the dead or will save you from your sins just because the bible says so. That last item is pure theology, though, so you're free to believe if you want.