according to your unfailing love;
according to your great compassion
blot out my transgressions.
Wash away all my iniquity
and cleanse me from my sin.
For I know my transgressions,
and my sin is always before me.
Against you, you only, have I sinned
and done what is evil in your sight,
so that you are proved right when you speak
and justified when you judge.
Create in me a pure heart, O God,
and renew a steadfast spirit within me.
The sacrifices of God are a broken spirit;
a broken and contrite heart,
O God, you will not despise.
from Psalm 51, New International Version