Anony Mous,
You are closer to the way Jews explain their own theology than you might realize. It's actual somewhat of a complimentary point of view you are expressing. But there are also some serious misconceptions you cling to.
Jews don't actually "believe" in a "God." The God of Abraham isn't a deity at all. Since we are alive in a universe, this is an "effect" of a "Cause." The "Cause" came to be expressed in ancient terms borrowed from Mesopotamian society, like "god" and other such terms, but Abraham rejected the idea of gods in their entirety.
Monotheism in Judaism is not merely that there is but one God, but also that God is ineffable. In other words, God is not even a god. Deities don't exist.
The stories of the Hebrew Scriptures were not used as you describe. What you mention is a Christian take, roughly what is taught by the Watchtower. The Jewish Bible was written during the Babylonian exile.
During the exile small communities assimilated and lost their identities. Without our land, with king or shrine, we would have lost ours too. But our religious priests did something clever. Their gave our customs and folklore a religious meaning and turned it into Liturgy for the synagogue system.
The stories were for systematic readings to for a yearly calendar, to be repeated on Sabbaths in public worship, especially to give new religious meaning to festivals we had celebrated for millennia. The narratives had a basis in history but were more like modern American legends, like the Midnight Ride of Paul Revere, George Washington chopping down a cheery tree as a boy, Betsy Ross creating the first American Flag, etc. These are not factual American tales, but they harbor important truths Americans hold dear.
The Jewish Bible was created to preserve Hebrew truths to preserve our cultural identity through the exile so we would not disappear, and it worked. It's not what you say it was. It had a very definite purpose. That's why we Jews treat much of it as folklore...because we know it was designed to be just that.
You are still holding on to some idea the Watchtower taught you, that the Bible is some history book. Knowing it can't be, you mix that fact up with the idea that it has been changed and rewritten over the centuries and so mixed up that nobody can be sure what it originally meant, or that it got all it's ideas from a "pantheon of gods."
Again, if you are going to ever be an authentic critical thinker, you are going to have to learn authentic world history. You might want to go to college and take a few courses. At least study the history of the Jews if you are going to criticize the Bible so you can at least get it right when you discuss why we Jews put the thing together in the first place.
I mean think about the conversation you are having with me right now. You are telling me, a Jew, what the origins of my culture and my peoples' scripture is, a text that I, as a 50 year-old Jewish man, have spent my life studying, that I can read in Biblical Hebrew, who has lost ancestors in the Spanish Inquisition, grandparents and aunts, uncles, and cousins in the Holocaust, studies the Mishnah, the Talmud, prays in Hebrew, keeps Jewish customs, knows Jewish history and philology, and you are saying that you with...what background and credentials in Hebrew and Jewish studies?...that what you've written in your post is not only correct but has the backing and acceptance of academia, Jewish, Christian, and secular?
Is It really the result of authentic critical thinking that you are going to tell learned Jews that they don't really know anything about their own Scriptures and history of its composition? Sure sounds like the Watchtower to me. Sure you are not still affiliated with them?