Römer 8:2

For the law of the Spirit of life in Christ Jesus hath made me free--rather, "freed me"--referring to the time of his conversion, when first he believed. from the law of sin and death--It is the Holy Ghost who is here called "the Spirit of life," as opening up in the souls of believers a fountain of spiritual life (see on Joh 7:38-39); just as He is called "the Spirit of truth," as "guiding them into all truth" (Joh 16:13), and "the Spirit of counsel and might, the spirit of knowledge and the fear of the Lord" (Isa 11:2), as the inspirer of these qualities. And He is called "the Spirit of life in Christ Jesus," because it is as members of Christ that He takes up His abode in believers, who in consequence of this have one life with their Head. And as the word "law" here has the same meaning as in Rom 7:23, namely, "an inward principle of action, operating with the fixedness and regularity of a law," it thus appears that "the law of the Spirit of life in Christ Jesus" here means, "that new principle of action which the Spirit of Christ has opened up within us--the law of our new being." This "sets us free," as soon as it takes possession of our inner man, "from the law of sin and death" that is, from the enslaving power of that corrupt principle which carries death in its bosom. The "strong man armed" is overpowered by the "stronger than he"; the weaker principle is dethroned and expelled by the more powerful; the principle of spiritual life prevails against and brings into captivity the principle of spiritual death--"leading captivity captive." If this be the apostle's meaning, the whole verse is to this effect: That the triumph of believers over their inward corruption, through the power of Christ's Spirit in them, proves them to be in Christ Jesus, and as such absolved…

The apostle, having fully explained the doctrine of justification, and pressed the necessity of sanctification, in this chapter applies himself to the consolation of the Lord's people. Ministers are helpers of the joy of the saints. "Comfort ye, comfort ye my people," so runs our commission, Isa 40:1. It is the will of God that his people should be a comforted people. And we have here such a draught of the gospel charter, such a display of the unspeakable privileges of true believers, as may furnish us with abundant matter for joy and peace in believing, that by all these immutable things, in which it is impossible for God to lie, we might have strong consolation. Many of the people of God have, accordingly, found this chapter a well-spring of comfort to their souls, living and dying, and have sucked and been satisfied from these breasts of consolation, and with joy drawn water out of these wells of salvation. There are three things in this chapter: I. The particular instances of Christians' privileges (v. 1-28). II. The ground thereof laid in predestination (Rom 8:29, Rom 8:30). III. The apostle's triumph herein, in the name of all the saints (Rom 8:31 to the end).

8:2 the power (literally the law) of the life-giving Spirit: This reference to power or law could refer to the law of Moses, which the Spirit can use to produce life. But because Paul does not portray the law as a life-giving entity, “law” here, as in 7:23, probably means principle or power. The Holy Spirit is a power that frees the believer from the power of sin that leads to death.