It's a combination of all. You can find historically verified events in it, and you can also find poetic elements as well (the Psalms, the Proverbs, the parables told by Jesus etc.). It's a religious text that encompasses a wide variety of literary styles.Some would put it in one collumn while others would put it in another?
Fact or Fiction?
Or an historical document?
Don't forget how many translations it has been through too?