6:16-20 Every man is the servant of the master to whose commands he yields himself; whether it be the sinful dispositions of his heart, in actions which lead to death, or the new and spiritual obedience implanted by regeneration. The apostle rejoiced now they obeyed from the heart the gospel, into which they were delivered as into a mould. As the same metal becomes a new vessel, when melted and recast in another mould, so the believer has become a new creature. And there is great difference in the liberty of mind and spirit, so opposite to the state of slavery, which the true Christian has in the service of his rightful Lord, whom he is enabled to consider as his Father, and himself as his son and heir, by the adoption of grace. The dominion of sin consists in being willingly slaves thereto, not in being harassed by it as a hated power, struggling for victory. Those who now are the servants of God, once were the slaves of sin.
19. I speak after the manner of men—descending, for illustration, to the level of common affairs.
because of the infirmity of your flesh—the weakness of your spiritual apprehension.
for as ye have yielded—"as ye yielded," the thing being viewed as now past.
your members servants to Uncleanness and to Iniquity unto—the practice of
iniquity; even so now yield your members servants to Righteousness unto holiness—rather, "unto (the attainment of) sanctification," as the same word is rendered in 2Th 2:13; 1Co 1:30; 1Pe 1:2:—that is, "Looking back upon the heartiness with which ye served Sin, and the lengths ye went to be stimulated now to like zeal and like exuberance in the service of a better Master."