Have mercy on us, O God, according to your steadfast love; according to your abundant mercy blot out our transgressions.
Wash us thoroughly from our iniquity, and cleanse us from our sin! For we know our transgressions, and our sin is ever before us.
Against you, you only, have we sinned and done what is evil in your sight, so that you may be justified in your words and blameless in your judgment.
Hide your face from our sins, and blot out all our iniquities.
Create in us a clean heart, O God, and renew a right spirit within us.
Cast us not away from your presence, and take not your Holy Spirit from us.
Restore to us the joy of your salvation, and uphold us with a willing spirit.
For you will not delight in sacrifice, or we would give it;
you will not be pleased with a burnt offering.
Our sacrifice, O God, is a broken spirit;
a broken and contrite heart, O God, you will not despise.
-from Psalm 51:1-4; 9-12; 16-17 (ESV
adapted from Christ-Centered Worship by Bryan Chapell