Sin gets life from the Law...it takes what is good, twists it and murders us with it. Limiting our understanding of sin to 'actions' dangerously diminishes its reality. The essence of sin is placing something else on the throne that belongs to God alone. It is allowing what is empty and profitless to direct us right into death. The Law helps us see when we do that, but Paul says our flesh is too weak to combat sin on its own. And then he gives the praise that should well up in every one of us: Jesus Christ delivers from the body of death!
Only the Spirit of Life empowers this body to live out the beauty of the Law--the beauty of righteousness. The Spirit helps me in my weaknesses, prays for me and moves me toward the destination God desires: conformed to the image of Jesus Christ, conformed to the image of righteousness. Wow.