Have Mercy On Me

Have mercy on me, O God,
According to Your loving kindness, according to Your tender mercies,
Blot out my transgressions,
Wash me thoroughly from my iniquity,
And cleanse me from my sin.

... Against You, You only, have I sinned, and done this evil in your sight...

Purge me with hyssop, and I shall be clean,
Wash me, and I shall be whiter than snow.
Make me hear joy and gladness, so that the bones You have broken may rejoice.
Hide your face from my sins...

(From Psalm 51)