All of us have problems with the Old Testament. That means every nation is important. Instead of the Jewish Old Testament, God could have preserved for us an account of the history of any other nation. But of course no book could contain the religious history of every tribe and nation.
Most people read their nation's past through rose colored spectacles.
What impresses me is that the Old Testament never glossed over the serious faults of Abraham, Moses, Saul, David, Solomon. We are given the specific the faults of the military leaders, kings, priests, and false prophets which resulted in the Jewish nation being taken into exile. The wisdom of Job and Proverbs still delight us after three thousand years. There are examples of faith and powerful prayers. And of course the Son of God was going to take birth among Jews in what was then Jewish territory.