Spirit." The Spirit here is the Spirit mentioned in verse 11, the Spirit of Christ, the Spirit
properly and strictly, -- for "eternal life is the gift of God through Jesus Christ," Romans 6:23, -- but of means and end. God hath appointed this means for the attaining that end, which he hath freely promised. Means, though necessary, have a fair subordination to an end of free promise. A gift, and procuring cause in him to whom it is given, are inconsistent. The intendment, then, of this propostion as conditional is, that there is a certain infallible connection and coherence between true mortification and eternal life: if you use this means, you shall obtain that end; if you do mortify, you shall live. And herein lies the main motive unto and enforcement of the duty prescribed.
2. The next thing we meet withal in the words is the persons to whom this duty is prescribed, and that is expressed in the word "Ye," in the original included in the verb, "if ye mortify;" -- that is, ye believers; ye to whom "there is no condemnation," verse 1; ye that are "not in the flesh, but in the Spirit," verse 9; who are "quickened by the Spirit of Christ," verses 10, 11; to you is this duty prescribed. The pressing of this duty immediately on any other is a notable fruit of that superstition and self-righteousness that the world is full of, -- the great work and design of devout men ignorant of the gospel, Romans 10:3,4; John 15:5. Now, this description of the persons, in conjunction with the prescription of the duty, is the main foundation of the ensuing discourse, as it lies in this thesis or proposition:--
The choicest believers, who are assuredly freed from the condemning power of sin, ought yet to make it their business all their days to mortify the indwelling power of sin.
3. The principal efficient cause of the performance of this duty is the Spirit:-- "If by the Spirit." The Spirit here is the Spirit mentioned in verse 11, the Spirit of Christ, the Spirit of God, that "dwells in us," verse 9, that "quickens us," verse 11; "the Holy Ghost," verse 14; the "Spirit of adoption," verse 15; the Spirit "that maketh intercession for us," verse 26. All other ways of mortification are vain, all helps leave us helpless; it must be done by the Spirit. Men, as the apostle intimates, Romans 9:30-32, may attempt this work on other principles, by means and advantages administered on other accounts, as they always have done, and do: but, saith he, "This is the work of the Spirit; by him alone is it to be wrought, and by no other power is it to be brought about." Mortification from a selfstrength, carried on by ways of self-invention, unto the end of a self-righteousness, is the soul and substance of all false religion in the world. And this is a second principle of my ensuing discourse.
4. The duty itself, "Mortify the deeds of the body," is nextly to be remarked.
Three things are here to be inquired into:-- (1.) What is meant by the body; (2.) What by the deeds of the body; (3.) What by mortifying of them.
(1.) The body in the close of the verse is the same with the flesh in the beginning: "If ye live after the flesh ye shall die; but if ye .... mortify the deeds of the body," -- that is, of the flesh. It is that which the apostle hath all along discoursed of under the name of the flesh; which is evident from the prosecution of the antithesis between the Spirit and the flesh, before and after. The body, then, here is taken for that corruption and depravity of