That is, the Spirit giving life. He is so called because He exercises life-giving power (see v. 11). The law of the Spirit of life is the life-giving power of the Holy Spirit, ruling as a law in the life. The phrase “of life” expresses the effect accomplished, as in “justification of life” (see on ch. 5:18) and “the bread of life” (John 6:35). The Spirit brings life and freedom, in contrast with the law of sin, which produces only death and condemnation (see on Rom. 7:21-24).

Some translators connect these words with “the Spirit of life.” Others connect them with “hath made me free.” The latter seems to be the more natural interpretation. Paul is emphasizing the fact that the Spirit exercises His life-giving power through the union with Christ. It is in the experience of close fellowship and union with Christ that the believer receives this power to overcome in the battle against sin.

 Or, “freed me.” Textual evidence is divided (cf. p. 10) between the reading “me” and “thee.” The difference is inconsequential. Paul is doubtless referring back to his experience of rebirth and baptism, when he began to “walk in newness of life” (ch. 6:4) and to “serve in newness of spirit” (ch. 7:6).

 That is, the authority exercised by sin and ending in death. Sin is no longer the predominating and controlling influence in his life. The indwelling Spirit of life inspires obedience and gives power to “mortify the deeds of the body” (v. 13). Thus the law of the Spirit of life works directly contrary to the law of sin and death in the members, empowering the believer to overcome sin’s destroying influence and freeing him from sin’s bondage and condemnation.