|Nathan Confronts David|
Or we have the Exodus-John two punch about Bread from heaven/bread of life. But then we had John on that one last week (and again next week -- makes me glad I am not preaching again til August 26).
I think I might be tempted to preach on Psalm 51, with a touch of Nathan's parable included. Not to induce guilt, but to talk about appropriate guilt as opposed to shame and a definite emphasis on forgiveness.
Or one could resort to a video sermon and show this VeggieTales (maybe omitting the Silly Songs with Larry portion):