My conscience is clear, but that does not make me innocent. It is the Lord who judges me. (NIV)
I am not conscious of anything against myself, and I feel blameless; but I am not vindicated and acquitted before God on that account. It is the Lord [Himself] Who examines and judges me. (AMP)
For I know nothing by myself; yet am I not hereby justified: but he that judgeth me is the Lord. (KJV)