Create in Me a Clean Heart, O God (Listen)

To the choirmaster. A Psalm of David, when Nathan the prophet went to him, after he had gone in to Bathsheba.

  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 only, have I sinned
    and done what is evil in your sight,
  so that you may be justified in your words
    and blameless in your judgment.
  Behold, I was brought forth in iniquity,
    and in sin did my mother conceive me.
  Behold, you delight in truth in the inward being,
    and you teach me wisdom in the secret heart.
  Purge me with hyssop, and I shall be clean;
    wash me, and I shall be whiter than snow.
  Let me hear joy and gladness;
    let the bones that you have broken rejoice.
  Hide your face from my sins,
    and blot out all my iniquities.

(ESV)