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.

1. We shall consider those violent efforts that are made by corrupt nature, in those who are unregenerate, in whom, though there be no principle of grace to enable them to withstand them; yet they have a conflict in their own spirits. There is something in nature, that, for a time, keeps them from complying with temptations to the greatest sins; though the flesh, or that propensity that is in them to sin, will prevail at last, and lead them from one degree of impiety to another, unless prevented by the grace of God. In this case the conflict is between corrupt nature and an enlightened conscience; and that more especially in those who have had the advantage of a religious education, and the good example of some whom they have conversed with, whereby they have contracted some habits of moral virtue, which are not immediately extinguished: it is not an easy matter to persuade them to commit those gross, and scandalous sins, which others, whose minds are blinded, and their hearts hardened to a greater degree by the deceitfulness of sin, commit with greediness and without remorse. The principles of education are not immediately broken through; for in this case men meet with a great struggle in their own breasts, before they entirely lose them; and they proceed, by various steps, from one degree of wickedness unto another[[80]]. A breach is first made in the fence, and afterwards widened by a continuance in the same sins, or committing new ones, especially such as have in them a greater degree of presumption. And this disposes the soul to comply with temptations to greater sins; whereas, it would be to no purpose to tempt him at first, to be openly profane, blaspheme the name of God, or cast off all external acts of religion, and abandon himself to those immoralities which the most notoriously wicked, and profligate sinners commit, without shame, till he has paved the way to them by the commission of other sins that lead thereunto.

That which at first prevents or restrains him from the commission of them, is something short of a principle of grace which we call the dictates of a natural conscience, which often checks and reproves him: his natural temper or disposition is not so far vitiated, at present as to allow of, or incline him to pursue any thing that is openly vile and scandalous; he abhors, and, as it were, trembles at the thoughts of it. Thus when the prophet Elisha told Hazael of all the evil that he would do unto the children of Israel, that he would set their strong holds on fire, slay their young men with a sword, dash their children, and rip up their women with child; when he heard this, he entertained the thought with a kind of abhorrence, and said, But what, is thy servant a dog, that he should do this great thing, 2 Kings viii. 12, 13. Yet afterwards, when king of Syria, we find him of another mind; for he was a greater scourge to the people of God than any of the neighbouring princes, and smote them in all the coasts of Israel, chap. x. 32.

Now that which prevents these greater sins, is generally fear or shame; their consciences terrify them with the thoughts of the wrath of God, which they would hereby expose themselves to; or they are apprehensive that such a course of life would blast their reputation amongst men, and be altogether inconsistent with that form of godliness which they have had a liking to from their childhood. But since these restraints do not proceed from the internal and powerful influence of regenerating grace, being excited by lower motives than those which the Spirit of God suggests, in them who are converted; since natural conscience is the main thing that restrains them, corrupt nature first endeavours to counteract the dictates thereof, and, by degrees, gets the mastery over them. When conscience reproves them, they first offer a bribe to it, by performing some moral duties, to silence its accusations for presumptuous sins, and pretend that their crimes fall short of those committed by many others; at other times they complain of its being too strict in its demands of duty, or severe in its reproofs for sin. And if all this will not prevail against it, but it will, notwithstanding, perform the office of a faithful reprover, then the sinner resolves to stop his ears against convictions; and if this will not altogether prevent his being made uneasy thereby, he betakes himself to those diversions that may give another turn to his thoughts, and will not allow himself time for serious reflection; and associates himself with those whose conversation will effectually tend to extinguish all his former impressions of moral virtue; and by this means, at last he stupifies his conscience, and it becomes, as the apostle expresses it, seared with a hot iron, 1 Tim. iv. 2. and so he gets, as I may express it, a fatal victory over himself; and from that time meets with no reluctancy or opposition in his own breast, while being past feeling, he gives himself over unto lasciviousness, to work uncleanness, and all manner of iniquity with greediness, Eph. iv. 19. which leads us to consider,

2. That conflict which is between the flesh and spirit, in those in whom the work of sanctification is begun. Here we shall first observe, the lustings of the flesh; and then the opposition that it meets with from that principle of grace which is implanted and excited in them, which is called the lusting of the spirit against it.

(1.) How corrupt nature exerts itself in believers, to prevent the actings of grace. Here it may be observed,

[1.] That that which gives occasion to this, is the Spirit’s withdrawing his powerful influences, which, when the soul is favoured with, have a tendency to prevent those pernicious consequences which will otherwise ensue. And God withdraws these powerful influences sometimes in a way of sovereignty, to shew him that it is not in his own power to avoid sin when he will; or that he cannot, without the aids of his grace, withstand those temptations which are offered to him to commit it. Or else, he does this with a design to let him know what is in his heart; and that he might take occasion to humble him for past sins, or present miscarriages, and make him more watchful for the future.

[2.] Besides this, there are some things which present themselves in an objective way, which are as so many snares laid to entangle him. And corrupt nature makes a bad improvement thereof, so that his natural constitution is more and more vitiated by giving way to sin, and defiled by the remainders of sin that dwelleth in him. The temptation is generally adapted to the corrupt inclination of his nature, and Satan has a hand therein. Thus if his natural temper inclines him to be proud or ambitious, then immediately the honours and applause of the world are presented to him; and he never wants examples of those, who, in an unlawful way, have gained a great measure of esteem in the world, and made themselves considerable in the stations in which they have been placed: if he is naturally addicted to pleasures, of what kind soever they be, then something is offered that is agreeable to corrupt nature, which seems delightful to it; though it be in itself, sinful: if he be more than ordinarily addicted to covetousness, then the profits and advantages of the world are presented as a bait to corrupt nature, and groundless fears raised in him, of being reduced to poverty, which, by an immoderate pursuit after the world, he is tempted to fence against. Moreover, if his natural constitution inclines him to resent injuries, then Satan has always his instruments ready at hand to stir up his corruption, and provoke him to wrath, by offering either real or supposed injuries; magnifying the former beyond their due bounds, or inferring the latter without duly considering the design of those whose innocent behaviour sometimes gives occasion hereunto, and, at the same time, overcharging his thoughts with them, as though no expedient can be found to atone for them. Again, if his natural constitution inclines him to sloth and inactivity, then the difficulties of religion are set before him, to discourage him from the exercise of that diligence which is necessary to surmount them. And if, on the other hand, his natural temper leads him to be courageous and resolute, then corrupt nature endeavours to make him self-confident, and thereby to weaken his trust in God. Or if he be naturally inclined to fear, then something is offered to him, that may tend to his discouragement, and to sink him into despair. These are the methods used by the flesh, when lusting against the spirit; which leads us to consider,

(2.) The opposition of the spirit to the flesh; or how the principle of grace in believers inclines them to make a stand against indwelling sin, which is called the lusting of the spirit against the flesh. The grace of God, when wrought in the heart in regeneration, is not an unactive principle; for it soon exerts itself, as being excited by the power of the Spirit, who implanted it; and from that time there is, or ought to be, a constant opposition made by it to corrupt nature; and that, not only as the soul, with unfeigned repentance, mourns for it, and exercises that self-abhorrence which the too great prevalence thereof calls for; but as it leads him to implore help from God, against it, by whose assistance he endeavours to subdue the corrupt motions of the flesh; or, as the apostle expresses it, to mortify the deeds of the body, Rom. viii. 13. that by this means they may not be entertained, or prove injurious and destructive to him.