Romans 6 Intro: Intimate connection between justification and sanctification - eternal life the gift of God

Robert Haldane: Commentary on Romans, Chapter Six.

Introduction
IN the preceding part of the Epistle the universal depravity and guilt of man, and the free salvation through the blood of the Lord Jesus Christ, had been fully exhibited. Paul now proceeds to prove the intimate connection between the justification of believers and their sanctification. He commences by stating an objection which has in all ages been advanced as an unanswerable argument against salvation by grace. He asks, What is the consequence of the doctrine he has been inculcating? If justification be bestowed through faith, without works, and if, where sin abounded, grace has much more abounded, may we not continue in sin that grace may abound? No objection could be more plausible. It is such as will forcibly strike every natural man, and is as common now as it was in the days of the Apostle. 

Paul repels this charge by declaring the union of believers with Jesus Christ, by whom, as is represented in baptism, His people are dead to sin, and risen with Him to walk in newness of life. Having established these important truths, he urges (ver. 11) on those whom he addresses the duty of being convinced that such is their actual state. In verses 12 and 13, he warns them not to abuse this conviction; and for their encouragement in fighting the good fight of faith, to which they are called, assures them, in the 14th verse, that sin shall not have dominion over them, because they are not under the law but under grace. Thus the Apostle proves that, by the gracious provision of the covenant of God, ratified by the blood of Him with whom they are inseparably united, they who are justified cannot continue to live in sin; but though sin shall not have dominion over them, still, as their sanctification is not yet perfect, he goes on to address them as liable to temptation. What he had said, therefore, concerning their state as being in Christ, did not preclude the duty of watchfulness; nor, since they had formerly been the servants of sin, of now proving that they were the servants of God, by walking in holiness of life. Paul concludes by an animated appeal to their own experience of the past, and to their prospects for the future. He asks, what fruit had they in their former ways, which could only conduct to shame and death? On the other hand, he exhorts them to press onwards in the course of holiness, at the end of which they would receive the crown of everlasting life. But, along with this assurance, he reminds them of the important truth, that while the just recompense of sin is death, eternal life is the gift of God, through Jesus Christ our Lord.