Prayer For Mercy and Cleansing
1    Have mercy upon me, O God, according to your  lovingkindness:  according  unto  the multitude of your tender mercies blot out my transgressions.
2    Wash me thoroughly from my iniquity, and cleanse me from my sin.
3    For I acknowledge my transgressions: and my sin is ever before me.
4    Against you, you only, have I sinned, and done this evil in your sight: that you might be justified  when  you  speak,  and  be  blameless when you judge.
5   Behold, I was brought forth in iniquity, and in sin did my mother conceive me.
6   Behold, you desire truth in the inward parts: and  in  the  hidden  part you shall make me to know wisdom.
7   Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.
8   Make me to hear joy and gladness; that the bones which you have broken may rejoice.
9   Hide your face from my sins, and blot out all my iniquities.
10  Create in me a clean heart, O God; and renew a right Spirit within me.
11  Cast me not away from your presence; and take not your Holy Spirit from me.
12  Restore unto me the joy of your salvation; and uphold me with your free Spirit.
13  Then will I teach transgressors your ways; and sinners shall be converted unto you.
14  Deliver me from the guilt of bloodshed, O God, God of my salvation: and my tongue shall sing aloud of your righteousness.
15  O Lord, open my lips; and my mouth shall show forth your praise.
16  For you desire not sacrifice; else would I give it: you delight not in burnt offering.
17  The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, you will not despise.
18  Do good in your good pleasure unto Zion: build you the walls of Jerusalem.
19  Then shall you be pleased with the sacrifices  of  righteousness,  with  burnt  offering and whole burnt offering: then shall they offer bullocks upon your altar.