Psalm 51

Create in me a pure heart, O God, and renew a steadfast spirit within me. Psalm 51:10 NIVUK http://bible.com/113/psa.51.10.NIVUK

My sacrifice, O God, is a broken spirit; a broken and contrite heart you, God, will not despise.
Psalm 51:17 NIVUK
http://bible.com/113/psa.51.10-17.NIVUK