Behold, You desire truth in the innermost being,
And in the hidden part
You will make me know wisdom.
Purify me with hyssop,
and I shall be clean;
and I shall be whiter than snow.
Make me to hear joy and gladness,
Let the bones which You have broken
Hide Your face from my sins
And blot out all my iniquities.
David, Psalm 51, ESV