Romans 6:13

The body then is indifferent between vice and virtue, as also instruments (or arms) are. But either effect is wrought by him that useth it. As if a soldier fighting in his country's behalf, and a robber who was arming against the inhabitants, had the same weapons for defence. For the fault is not laid to the suit of armor, but to those that use it to an ill end. And this one may say of the flesh too which becomes this or that owing to the mind's decision, not owing to its own nature. For if it be curious after the beauty of another, the eye becomes an instrument of iniquity, not through any agency of its own (for what is of the eye, is but seeing, not seeing amiss), but through the fault of the thought which commands it. But if you bridle it, it becomes an instrument of righteousness. Thus with the tongue, thus with the hands, thus with all the other members. And he well calls sin unrighteousness. For by sinning a man deals unrighteously either by himself or by his neighbor, or rather by himself more than by his neighbor. Having then led us away from wickedness, he leads us to virtue, in these words: "But yield yourselves unto God, as those that are alive from the dead." See how by his bare words he exhorts them, on that side naming "sin" and on this "God." For by showing what a difference there is between the rulers, he casts out of all excuse the soldier that leaveth God, and desireth to serve under the dominion of sin. But it is not only in this way, but also by the sequel, that he establishes this; by saying, "as alive from the dead." For by these he shows the wretchedness of the other, and the greatness of God's gift. For consider, he says, what you were, and what you have been made. What then were ye? Dead, and ruined by a destruction which could not from any quarter be repaired. For neither was there any one who had the power to assist you. […]

Where are the Manicheans who say that the body is sinful by nature? The body is an instrument, and an instrument is a means for both virtue and vice. Thus a sword serves the warrior as a weapon for the defense of citizens, while for …

Then when he says, so as to obey, he clarifies this admonition. In regard to this it should be noted that sin reigns in man in two ways: in one way, through internal consent of the mind. To remove this he says, so as to …

The members of the body are made use of by the corrupt nature as tools, by which the wills of the flesh are fulfilled; but we must not consent to that abuse. The members of the body are fearfully and wonderfully made; it is a pity they should be the devil's tools of unrighteousness unto sin, instruments of the sinful actions, according to the sinful dispositions.

The surest evidence of our spiritual life is the dedication of ourselves to God. It becomes those that are alive from the dead (it may be understood of a death in law), that are justified and delivered from death, to give themselves to him that hath so redeemed them. (4.) It is to yield our members as instruments of righteousness to God.

Neither yield ye your members,....

Neither yield ye your members instruments of unrighteousness unto Sin, but yield yourselves--this is the great surrender. unto God as those that are alive from the dead, and--as the fruit of this. your members--till now prostituted to sin. instruments of righteousness unto God--But what if indwelling sin should prove too strong for us? The reply is: But it will not.

Neither yield ye your members - Do not yield to temptation. It is no sin to be tempted, the sin lies in yielding. While the sin exists only in Satan’s solicitation, it is the devil’s sin, not ours: when we yield, we make the devil’s sin our own: then we Enter Into temptation. Resist the devil, and he will flee from you. Satan himself cannot force you to sin: till he wins over your will, he cannot bring you into subjection. You may be tempted; but yield not to the temptation. Yield yourselves unto God - Let God have your wills; keep them ever on his side; there they are safe, and there they will be active. Satan cannot force the will, and God will not. Indeed it would cease to be will were it forced by either: it is essential to its being that it be free. And your members as instruments, etc. - Let soul and body be employed in the service of your Maker; let him have your hearts; and with them, your heads, your hands, your feet. Think and devise what is pure; speak what is true, and to the use of edifying; work that which is just and good; and walk steadily in the way that leads to everlasting felicity. Be holy within and holy without.