The apostle always proposes such objections, which is why he both raises and resolves them, as he does with the present objection, answering it: "God forbid." Then he proves that it is not difficult for us not to sin. Consider, he urges, in your mind which is better: to be slaves of sin, having surrendered to it of your own will (this is what "you yield" means), and to receive as a reward death, that is, eternal punishment (for the sin of Adam produced bodily and temporal death, but sin committed now subjects a person to eternal death, that is, eternal punishment), or to obey God and receive as a reward righteousness and the blessings that flow from it?
Rom. 6:17. Thanks be to God that you, having formerly been slaves of sin, became obedient from the heart to that form of teaching to which you were delivered.
"Thanks be to God." Our deliverance from those evils is not a matter of human strength, but of God's; which is why one must give thanks. Then you became obedient not by compulsion, but by your own heartfelt disposition; therefore do not return to the worse things, from which you withdrew voluntarily. As proof that although they themselves came, yet all this depended also on the grace of God, he added: "you delivered yourselves," that is, you were guided by God to the form of teaching. And what is the form of teaching? To live in a devout and well-ordered manner.
Rom. 6:18. Freed from sin, you became slaves of righteousness.
Rom. 6:19. I speak after the manner of men because of the infirmity of your flesh: for as ye have yielded your members servants to uncleanness and to iniquity unto iniquity; even so now yield your members servants to righteousness unto holiness.
Two, he says, benefits you received from God: you were both freed from such dishonor and became servants of righteousness, which constitutes great glory for you. Then, wishing to say that the Romans should serve God just as they served sin, he remarks beforehand: "I speak after the manner of men," that is, I am presenting something lowly, unworthy of the subject, proportionate to your weakness. For it was fitting to show an incomparably greater measure of service to God than to sin; but because of your weakness, he says, present at least an equal measure. Notice how clearly he showed our voluntary servitude by saying: "now present your members." Of your own accord, he says, making yourselves captives, you subjected yourselves to uncleanness, that is, adultery, fornication, the most shameful deeds, and why do I speak of uncleanness alone — to every kind of "iniquity," and moreover "as servants to iniquity," that is, so as to practice still greater iniquity: for having committed some sin, you did not stop there, but found in that very thing an incentive to further iniquity. Therefore, in the same measure present your members "as servants to righteousness," that is, to every virtue, so as to lead a life in chastity and holiness, and not in the former uncleanness.
Rom. 6:20. When you were slaves to sin, you were free from righteousness.
Rom. 6:21. What fruit did you have then? Such deeds as you are now ashamed of yourselves, because the end of them is death.
When you lived in vices, he says, you were estranged from righteousness; at that time you did not submit to it, you did not at all wish to serve it, and you freed yourselves from it. Therefore now too, serving righteousness, do not submit to sin. And what fruit did you have from impurity? None, except dishonor — and why do I speak of dishonor? You had death as your fruit: "for the end of those things is death," both bodily very often, and spiritual always. But from death you have been delivered by the grace of Christ, and the shame still remains not without benefit; for now you are ashamed of those sins.
Rom. 6:22. But now, having been set free from sin and having become slaves of God, your fruit is holiness, and the end is eternal life.
Rom. 6:23. The wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.
The fruit of the works of sin is shame; the fruit of righteousness is sanctification, purity, innocence. The end of the former is death; the end of the latter is eternal life. "For the wages of sin is death." Thus, he says, to you also, who served sin, sin gave "wages" — death. "But the gift of God." He did not say: wages from God, but: "gift." For you did not receive it as a reward or recompense for labors, but all of that came from grace in Christ Jesus: for all was accomplished by Him.