Psalm 19:12-14 (KJV)
12 Who can understand his errors? cleanse thou me from secret faults.
13 Keep back thy servant also from presumptuous sins ; let them not have dominion over me: then shall I be upright, and I shall be innocent from the great transgression.
14 Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O Lord, my strength, and my redeemer.