But this more particularly appears, as it is observed in this answer, from the perpetual lustings of the flesh against the spirit. Thus the apostle speaks of, _the flesh lusting against the spirit, and the spirit against the flesh_, Gal. v. 19. and so of the contrariety of the one to the other; _so that we cannot do the things that we would_, and points out himself as an instance hereof, when he says, _I know that in me, that is, in my flesh, dwelleth no good thing; for to will is present with me, but how to perform that which is good, I find not; the good that I would I do not, but the evil which I would not, that I do_, Rom. vii. 18-23. and this reluctancy and opposition to what is good, he lays to the charge of sin that dwelt in him, which he considers as having, as it were, the force of a law; and in particular he styles it _the law of his members warring against the law of his mind_, which is the same thing with the lusting of the flesh, against the spirit: so that from hence it appears, that when God implants a principle of grace in regeneration, and carries on the work of sanctification in believers, he does not wholly destroy, or root out those habits of sin which were in the soul before this, but enables us to militate against, and overcome them by his implanting and exciting a principle of grace; and from hence arises this conflict that we are to consider. Indwelling sin is constantly opposing; but it does not always prevail against the principle of grace. The event or success of this combat is various, at different times. When corrupt nature prevails, the principle of grace, though not wholly extinguished, remains unactive, or does not exert itself, as at other times; all grace becomes languid, and there appears but little difference between him and an unbeliever; he falls into very great sins, whereby he wounds his own conscience, grieves the holy Spirit, and makes sad work for a bitter repentance, which will afterwards ensue: but inasmuch as the principle of spiritual life and grace is not wholly lost, it will some time or other be excited, and then will oppose, and maintain its ground against, the flesh, or the corruption of nature; and, as the consequence hereof, those acts of grace will be again put forth, which were before suspended. Having thus given an account of the conflict between indwelling sin and grace, we shall now more particularly shew, how the habits of sin exert themselves in those who are unregenerate, where there is no principle of grace to oppose them. And then, how they exert themselves in believers; and what opposition is made thereunto by the principle of grace in them; and how it comes to pass that sometimes one prevails, at other times the other.