Jewish teachers said that repentance and learning the law were the only present cures for the evil impulse; here Paul replies that knowing moral truth had not freed him from sin. But Judaism also believed that in the day of judgment the evil impulse would be eradicated. As some rabbis later put it, “God will take the evil impulse out in the sight of the nations and slay it”; or as Paul put it, Christians are dead to sin and freed from its power (chap. 6). Paul’s point in the context is that one must receive righteousness (including the power to live rightly) as a gift of God’s grace, not as an achievement by human effort (cf. 1:17; 8:4).
Keener, C. S. (1993). The IVP Bible background commentary: New Testament (Ro 7:14–25). Downers Grove, IL: InterVarsity Press.