The story of the Bible is that of a progressive revelation of God, culminiating in his incarnation in Jesus. Even when reading of atrocities by the Israelites, don't forget what life ws like among the "heathens "of the time. I concede the differences between the Old and New Testaments. Christian heretics even went so far as to deny that Yahweh was the God of Jesus Christ, but the message of the New Testament is that Jesus was the deliverer expected by the Jews.
The NT yes. The OT no. The OT is a story unto itself.