Grace is just another name for the Holy Spirit. When we live under grace, our lives are transformed by Him, and we must not be idle, but rather keep embracing Him and bringing grace into our lives.
Paul laments the fact that he is still in the flesh, sold into slavery to sin. As such, Paul still does things that he does not want to do. No good comes from the flesh, but bad things come from the flesh. We are, in a sense, dragged along by sin, and yet we choose to do these things we abhor. As long as we choose not to be commanded by grace, we are in that state. None can rescue us from that state, but Jesus Christ.
Paul ends chapter seven by saying that he’s mentally a slave to Christ, but physically a slave to the law of sin. This cannot be taken to be an excuse to seek anything short of perfection, since Paul tells us that we must reject the ways of the flesh.
The closing theme is Gerard Satamian’s Chansons Sans Paroles Op. 2 Pastorale, from the album Dry Fig Trees. www.magnatune.com