Behold, thou desirest truth in the inward being; therefore teach me wisdom in my secret heart. Purge me with hyssop, and I shall be clean; wash me, and I shall be whiter than snow. Fill me with joy and gladness; let the bones which thou hast broken rejoice. Hide thy face from my sins, and blot out all my iniquities. Create in me a clean heart, O God, and put a new and right spirit within me. Cast me not away from thy presence, and take not thy holy Spirit from me.
–Psalm 51:6-11