Learning to rejoice in the Old Testament (Grateful for its realism)

When more reports of atrocities fill our TV screens, it can be overwhelming. It is painful to watch. Likewise, it is hard to be grateful for Old Testament accounts of horror and wickedness. Yet the Bible is not a Disney version of life. It is not afraid to describe evil in all its dimensions. How do stories such as Judges 19 build us up rather than just cause us sorrow?