Psalm 51:1-4 New Revised Standard Version (NRSV)

Have mercy on me, O God,

according to your steadfast love;

according to your 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 you, you alone, have I sinned,

and done what is evil in your sight,

so that you are justified in your sentence

and blameless when you pass judgment.