death threatened in the clause foregoing, "If ye live after the flesh, ye shall die;" which,
our natures whereof the body, in a great part, is the seat and instrument, the very members of the body being made servants unto unrighteousness thereby, Romans 6:19. It is indwelling sin, the corrupted flesh or lust, that is intended. Many reasons might be given of this metonymical expression, that I shall not now insist on. The "body" here is the same with the "old man," and the "body of sin," Romans 6:6; or it may synecdochically express the whole person considered as corrupted, and the seat of lusts and distempered affections.
(2.) The deeds of the body. The greek word denoteth the outwards actions chiefly, "the works of the flesh," as they are called, Gal. 5:19; which are there said to be "manifest," and are enumerated. Now, though the outward deeds are here only expressed, yet the inward and next causes, from whence they spring. The apostle calls them deeds, as that which every lust tends unto; though it do but conceive and prove abortive, it aims to bring forth a perfect sin.
Having, both in the seventh and beginning of this chapter, treated of indwelling lust and sin as the fountain and principle of all sinful actions, he here mentions its destruction under the name of the effects which it doth produce. Romans 8:10, "The body is dead because of sin."
(3.) To mortify. "If ye put to death;" a metaphorical expression, taken from the putting of any living thing to death. To kill a man, or any other living thing, is to take away the principle of all his strength, vigour, and power, so that he cannot act or exert, or put forth any proper actings of his own; so it is in this case. Indwelling sin is compared to a person, a living person, called "the old man," with his faculties, and properties, his wisdom, craft, subtlety, strength; this, says the apostle, must be killed, put to death, mortified, -- that is, have its power, life, vigour, and strength, to produce its effects, taken away by the Spirit. It is, indeed, meritoriously, and by way of example, utterly mortified and slain by the cross of Christ; and the "old man" is thence said to be "crucified with Christ," Romans 6:6, and ourselves to be "dead" with him, verse 8, and really initially in regeneration, Romans 6:3-5, when a principle contrary to it, and destructive of it, Gal. 5:17, is planted in our hearts; but the whole work is by degrees to be carried on towards the perfection all our days. Of this more in the process of our discourse. The intendment of the apostle in this prescription of the duty mentioned is, -- that the mortification of indwelling sin remaining in our mortal bodies, that it may not have life and power to bring forth the works or deeds of the flesh is the constant duty of believers.
5. The promise unto this duty is life: "Ye shall live." The life promised is opposed to the death threatened in the clause foregoing, "If ye live after the flesh, ye shall die;" which, the same apostle expresseth, "Ye shall of the flesh reap corruption," Gal. 6:8, or destruction from God. Now, perhaps the word may not only intend eternal life, but also the spiritual life in Christ, which here we have; not as to the essence and being of it, which is already enjoyed by believers, but as to the joy comfort, and vigour of it: as the apostle says in another case, "Now I live, if ye stand fast," 1 Thess. 3:8; -- "Now my life will do me good; I shall have joy and comfort with my life;" -- "Ye shall live, lead a
good, vigorous, comfortable, spiritual life whilst you are here, and obtain eternal life hereafter."
Supposing what was said before of the connection between mortification and eternal life, as of means and end, I shall add only, as a second motive to the duty prescribed, that, --
The vigour, and power, and comfort of our spiritual life depends on the mortification of the deeds of the flesh.