. Religionists, on the other hand, claim their stories convey metaphorical truth because they were allegedly written - or inspired by - their own gods.
That is indeed the bugbear, but I think that blue - referring to the doctrine of 'inerrancy' - makes things seem blacker than is the case. 'Inerrancy' tends to be hobby-horse of the extreme fundamentalists (and maybe the Islamic fundamentalists are even worse than the Christian kind in this regard). Liberal protestants tend, naturally enough, to be more flexible, though no doubt many of them think that the 'spirit of God' was working through the writers - and no doubt is supposed to work through the sincere believers when they try to interpret the texts. The Catholic Church may not insist on the inerrancy of scripture, but no doubt will assert the inerrancy of the Church Fathers, the Magisterium, and of course the Pope in interpreting what is written (I'm willing to stand corrected on this).
The only honest approach, as far as I can see, is that these are all "words about God" - the attempts by sincere believers to set down what they thought the Deity required them to write (and the impressions differ enormously). Then again, when you come to the Old Testament, there are those texts which don't have much to say about the deity at all - such as Esther (zilch), Ecclesiastes, Proverbs, Song of Solomon etc. Some of these are still a source of valuable insights, or are simply beautiful writing.
Even those books where the writer's sense of the deity is all too present from the first - such as the Book of Job - give valuable insights into how the people of those times were grappling with the problem of evil and pain, and trying to come up with a solution.
At the very least, the OT is a collection of good (and often gruesome) stories. Sometimes you even come across a particularly vivid understanding of the nature of the male sexual impulse, particularly that of young and stupid males - such as the story of the rape of Tamar*....
in 2 Samuel 13