Why would gods most current teachings and his holy book be a copy or at the very least take teachings and actions from older pagan religions? And why would god inspire a book that's has so many contradictions and prophecies that didn't come true?
And going along with your last question, God promises a peace of land to Abraham and his offspring filled with milk and honey. Yet it's really a mostly arid hilly country which requires seasonal rain yet still has problems producing any meaningful crops in most areas. Yet all the while in lands just to the East and west there are massive rivers that create crop lands as far and the eye can see?