No, I'm not trying to tell you that. Those are facts.
Yahweh was a tribal God, it's in the Bible you know. But Heaven and Hell aren't, nor is Satan. Those are Christian beliefs derived from Zoroastrianism. The whole of existence ultimately leading into a battle between good and evil is central to Zoroastrianism. That too became a Christian belief. Jews didn't believe in a spiritual plane of existence either. That's Zoroastrian true too.
Quite frankly, I have no idea why the Old Testament is in the Bible, because the New Testament has far less connection to it than it does with Zoroastrianism, Hinduism, Buddhism, Roman paganism, and Mithraism - the template for Jesus often described as part of Zoroastrianism but actually an Iranian belief that goes even farther back...