Who also has made us able ministers of the new covenant; not of the letter, but of the spirit: for the letter kills, but the spirit gives life.
All Commentaries on 2 Corinthians 3:6 Go To 2 Corinthians 3
Ambrosiaster
AD 400
The Spirit, who is the law of faith which is not written but which is contained in the rational soul, is lifegiving, drawing to himself those who are guilty of mortal sin, so that they may be made righteous and cease altogether from sinning. Commentary on Paul’s Epistles.