Psalms 51:1, 7, 16-17

1 Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions. 

7 Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow. 

16 For thou desirest not sacrifice; else would I give it: thou delightest not in burnt offering. 

17 The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise.