Paul is redundant, quite often. He appears to be trying as hard as he can to make the churches understand the gospel of Jesus Christ. He writes, “For sin pays a wage, and the wage is death, but God gives freely, and His gift is eternal life, in union with Christ Jesus our Lord.” Paul contrasts an earned wage with a free gift; he contrasts sin and death with eternal life and union with Christ. The benefit of the free gift, says Paul, is holiness. In contrast, the benefit of sin is death.
Paul says this is a matter of slavery: either slavery to sin or slavery to righteousness. “You used to offer the parts of your body in slavery to impurity and to ever increasing wickedness, so now offer them in slavery to righteousness leading to holiness.” (Romans 6:19,NIV)
Paul writes of being “dead to the law through the body of Christ.” (Romans 7:4,NIV) “By dying to what once bound us, we are released from the law so that we may serve in the new way of the Spirit, and not in the old way of the written code.” (Romans 7:6,NIV)
“Therefore, there is now no condemnation for those who are in Christ Jesus,” concludes Paul. He is trying again to make the church understand the simple gospel of Christ; that the free gift of God is salvation from sin, the development of righteousness leading to holiness and eternal life.