The Bible did not come from a god. Rather, a description of the Christian god came from the Bible. The Bible came first. Without the Bible, there is no definition or description of the Christian god.
The Bible is a book of stories with shards of wisdom, poetry, and ethics included. But it is a book that was written by men - not gods.
We do not spend time trying to determine the veracity of Greek myths, or Hindu myths, or Biblical myths. The insights and wisdom from these books are not meant to determine whether they are True or Not True. Look for Truth instead.