by the law — The law produced desires to do things that it forbade.
members = parts of our bodies
delivered = discharged, to make ineffective
that being dead — Believers have died to the claims of the law.
newness of spirit — new life lived through the Spirit’s power. Who also made us sufficient as ministers of the new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life. (2 Corinthians 3:6).
oldness of the letter — outward conformity to the law
Indeed, our relationship to the Law has been doubly dissolved; it has died to us and we have died to it. And now we can serve this blessed Onewho loved us and gave Himself for us(Galatians 2:20, Ephesians 5:25), not in the old, dry dead, “religious” way, because the Law says we must, but in fresh, joyousnewness of spirit, our words and works expressing our gratitude and love. — Stam, page 164.