As Jesus speaks and acts in John’s Gospel, the people hear him at one level while he seeks to move them to a deeper level. When Jesus feeds the 5,000, for example, the crowd, stomachs filled, rushes to make him king. Jesus flees. God wants the hungry fed, but there is a deeper hunger and a better bread.
The one who voices Psalm 51 is on the floor before God, utterly ashamed and as dust before glory: “My sin is ever before me.” The symptoms of sin are gradually displaced by the greater reality of God: “Against you, you alone, have I sinned.” The speaker does not look outside for an oppressor to blame, but inside, to the “inward being,” for a heart to be renewed.
"Avoid abstraction," I was told as I prepared to speak to a group of junior high school students. "Seventh graders are still mostly concrete thinkers." The story of David seemed absolutely nonabstract and concrete, so I decided to use it as the basis of my talks.