Overall, David’s intercession parallels others in that YHWH presents an opening for intercession, David argues for protection of the innocent, and the intercession succeeds. Even its two unique features—confession and a link to ritual—follow biblical precedent: as in Lev 5:1-6, the guilty party must realize his sin, confess, and offer sacrifice before his sin is expiated (נשלח).—Forestalling Doom page 198
I guess the question is, how sensitive are we to the openings that God gives us to intercede? Are we too busy condemning the guilty to hear God say, "Intercede!"?