The Bible is a collection of many different texts; that is why it has many authors. While it can be evaluated as the whole collection, I think that each book of the Bible can be evaluated by its own, too. Actually, the book of Genesis does seem to come from multiple sources; also, it is believed that parts of the Gospels come from the Q Gospel, so even then there are different authors adding stuff within a single book.

I would say of course, there is art to be found in it, but as a whole, it's obviously not a work of art simply because it's a bunch of unrelated and overlapping pieces, with arbitrary parts removed via historical accident, no matter how much people try to claim otherwise.

First they said there was just one God, and the Bible contains "His" words. Then it turned out there were actually three, and one of them is edible and tastes just like crackers and wine. Now you're telling me there are 40? JFC, get your story straight, Christians!