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
Augustine of Hippo
AD 430
Let the Spirit be joined to the law, because, if you have received the law and if you lack the help of the Spirit, you do not fulfill what is of the law. You do not carry out what is commanded you… . Let the Spirit be added, let him help: that which is commanded is accomplished. If the Spirit is absent, the letter kills you… . You cannot excuse yourself on the plea of ignorance since you have received the law. Now, because you have learned what you should do, ignorance does not excuse you… . But why does the apostle say: “The letter kills, but the Spirit gives life”? How does the Spirit give life? Because he causes the letter to be fulfilled so that it may not kill. The sanctified are those who fulfill the law of God according to the gift of God. The law can command; it cannot help. The Spirit is added as a helper, and the commandment of God is fulfilled with joy and delight. Certainly many observe the law from fear, but those who keep the law from fear of punishment would prefer that what they fear did not exist. On the contrary, those who observe the law through love of justice rejoice even in that respect because they do not consider it hostile to them.