"Behold, you delight in truth in the inward being and you teach me wisdom in the secret heart." (Psalm 51:6 ESV)
Father in Heaven,
You know how inadequate I feel. I am unworthy to do anything for you. I am a sinner. I go astray so many times. Please forgive my shortcomings. Please cleanse me from the inward being. Please grant me purity of mind, thought, deed, and conduct. Grant me purity of heart and conscience that I might freely worship and adore you.
For your name's sake,
Amen.