Romans 6:14

If then sin hath no more dominion over us, why does he lay so great a charge upon them as he does in the words, "Let not sin reign in your mortal body," and, "yield not ye your members as instruments of unrighteousness unto sin?" What does that here said mean then? He is sowing a kind of seed in this statement, which he means to develop afterwards, and to cultivate in a powerful argument. What then is this statement? It is this; that our body, before Christ's coming, was an easy prey to the assaults of sin. For after death a great swarm of passions entered also. And for this cause it was not lightsome for running the race of virtue. For there was no Spirit present to assist, nor any baptism of power to mortify. But as some horse that answereth not the rein, it ran indeed, but made frequent slips, the Law meanwhile announcing what was to be done and what not, yet not conveying into those in the race anything over and above exhortation by means of words. But when Christ had come, the effort became afterwards more easy, and therefore we had a more distant goal set us, in that the assistance we had given us was greater. Wherefore also Christ saith, "Except your righteousness shall exceed the righteousness of the Scribes and Pharisees, ye shall in no case enter into the Kingdom of Heaven." But this he says more clearly in the sequel. But at present he alludes here briefly to it, to show that unless we stoop down very low to it, sin will not get the better of us. For it is not the Law only that exhorteth us, but grace too which also remitted our former sins, and secures us against future ones. For it promised them crowns after toils, but this (i.e. grace) crowned them first, and than led them to the contest. Now it seems to me that he is not signifying here the whole life of a believer, but instituting a comparison between the Baptism and the Law. And this he says in another passage also "The letter killeth, but the Spirit giveth life." For the Law convinceth of transgression, but grace undoes transgression. As then the former by convincing establisheth sin so the latter by forgiving suffereth us not to be under sin. And so thou art in two ways set free from this thraldom; both in thy not being under the Law, and in thy enjoying grace.