“The Lord will perfect that which concerns me” (Psalms 138:8)

David had confidence in his God. He didn’t say, "I have grace enough to perfect that which concerns me, or my faith is so steady, I will not fail, or, my love is so warm, it will never grow cold, or, my resolution is so firm, nothing can move it; no, his confidence was in his Lord alone. If we indulge any confidence which isn’t grounded on the Rock of ages, our confidence is worse than a dream, it will fall upon us, and expose our foolishness, to our sorrow and confusion. 

All that nature spins, in time will unravel. David was wise. He rested upon nothing but the Lord's work. “He who has begun a good work in you will complete it until the day of Jesus Christ” (Philippians 1:6). “For it is God who works in you both to will and to do for His good pleasure” (Philippians 2:13). If there’s even one thread in the celestial garment of our righteousness we insert ourselves, then we’re lost; this is our confidence, the Lord who began the work in us will perfect it. He has done it all, must do it all, and will do it all. Our confidence must not be in what we’ve done, nor in what we’ve resolved to do, but entirely in what the Lord did and will do. 

Your Old Man says, “You’ll never be able to stand. Look at the evil of your heart, you’ll never overcome addiction; remember the sinful pleasures and temptations of the world that beset you, you’ll be tempted and sin again!” Agree with him! Yes, I would indeed fail if I were left to my own strength. If I alone had to sail my weak ship over the rough sea. If that were the case, I would give up in despair; but, thanks be to God, He will perfect that which concerns me, and bring me to His harbor. We can never be too confident when we confide in Him alone.