One more for Fezzy \\Just a novel, then?\\
No, not really. Novels emerged as an art form in the mid 18th century. I expect you're just being provocative, but the Bible is in essence a collection of writings of various kinds collected because people thought they had value. The genres include tribal foundation stories, historical chronicles (though often written from a particular standpoint - it's difficult to see what an objective history would look like), lots of poetry, collections of "wise" sayings, collections of laws appropriate to the cultural milieux to which they belong (and many that are timeless), There are at least two works that are close to the idea of a novel, a story told to explore ideas: Job is one, Jonah another. There are books of prophecies, mostly not to do with predicting the future, but interpreting the present. Amongst these can be detected a thread eschewing the tribalist, racist (even fascist) God demanding blood sacrifices towards ideas of what makes for good living and an enlightened social conscience. That's not counting the "New Testament"
But of course, you already know all this. So, as you already know, not "just a novel". Much more besides.