Romans 7:6

But now we are delivered from the law
From the ministration of it, by Moses; from it, as a covenant of works; from its rigorous exaction; from its curse and condemnation, all this by Christ; and from its being an irritating, provoking law to sin, through the corruption of nature, by the Spirit and grace of Christ; but not from obedience to it, as in the hands of Christ. The Vulgate Latin version, and some copies read, "from the law of death"; and the Ethiopic version renders it, "we are loosed from the law, and are delivered from the former doctrine"; the doctrine of the legal dispensation.

That being dead;
not sin, but the law: in what sense believers are dead to the law, and that to them, (See Gill on Romans 7:4).

Wherein we were held:
as a woman is by the law to her husband, or as persons guilty, who are detained prisoners; so we were "kept under the law, shut up unto the faith", as in a prison, ( Galatians 3:23 ) ; Now the saints deliverance from the law through the abrogation of it, that losing its former life, vigour, power, and dominion, is not that they may live a loose licentious life and conversation, but that they

should serve
the Lord their God without slavish fear, and with a godly one, acceptably, in righteousness and holiness, all the days of their lives; and their Lord and Master Jesus Christ, who is King of saints, lawgiver in his church, and whose commandments are to be observed from a principle of love, in faith, and to his glory; yea, even the law itself, as held forth by him, as the apostle says in the close of this chapter, "with the mind I myself serve the law of God", ( Romans 7:25 ) : the manner in which this service is to be, and is performed, is,

in newness of Spirit;
under the influences of the Spirit of God, the author of renovation, of the new creature, or new man created in us, in righteousness and true holiness; and from a new heart, and new Spirit, and new principles of life, light, love, and grace, formed in the soul; and by walking in "newness of life", ( Romans 6:4 ) , or by a new life, walk, and conversation:

and not in the oldness of the letter;
not in the outward observance of the law of Moses, which is the "letter"; not indulging the old man, or walking after the dictates of corrupt nature; nor behaving according to the old former course of living: on the whole it may be observed, that a believer without the law, being delivered from it, that being dead to him, and he to that, lives a better life and conversation under the influence of the Spirit of God, than one that is under the law, and the works of it, destitute of the grace of God; the one brings forth "fruit unto death", ( Romans 7:5 ) , the other serves the Lord, "in newness of spirit, and not in the oldness of the letter".