Have mercy on me, O God

according to thy steadfast love;
according to thy abundant mercy
blot out my transgressions.
Wash me thoroughly from my iniquity,
and cleanse me from my sin!

For I know my transgressions,
and my sin is ever before me.
Against thee, thee only, have I sinned,
and done that which is evil in thy sight,
so that thou art justified in thy sentence
and blameless in thy judgment.

Behold, I was brought forth in iniquity,
and in sin did my mother conceive me.

Behold, thou desirest truth in the inward being;
therefore teach me wisdom in my secret heart.
Purge me with hyssop, and I shall be clean;
wash me, and I shall be whiter than snow.
Fill me with joy and gladness;
let the bones which thou hast broken rejoice.
Hide thy face from my sins,
and blot out all my iniquities.

Create in me a clean heart, O God,
and put a new and right spirit within me.
Cast me not away from thy presence,
and take not thy holy Spirit from me.
Restore to me the joy of thy salvation,
and uphold me with a willing spirit.

Then I will teach transgressors thy ways,
and sinners will return to thee.
Deliver me from bloodguiltiness, O God,
thou God of my salvation,
and my tongue will sing aloud of thy deliverance.

O Lord, open thou my lips,
and my mouth shall show forth thy praise.

For thou hast no delight in sacrifice;
were I to give a burnt offering,
thou wouldst not be pleased.
The sacrifice acceptable to God
is a broken spirit;
a broken and contrite heart, O God,
thou wilt not despise.
Psalm 51:1-17