To walk in the Spirit is to walk in obedience unto God, according to the supplies of grace which the Holy Ghost administers unto us; for so it is added, that "we shall not then fulfil the lusts of the flesh,"—that is, we shall be kept up unto holy obedience and the avoidance of sin.

Christians are called to wage war against this enemy, knowing that there are only two options: "Be killing sin or it will be killing you."25

That 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.

They must glaze, adorn, and dress the objects of the flesh, and bring them home to give satisfaction; and this they are able to do, in the service of a defiled imagination, beyond all expression.

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.

Take away the dispensation of the Spirit, and his effectual operations in all the intercourse that is between God and man; be ashamed to avow or profess the work attributed unto him in the gospel, -- and Christianity is plucked up by the roots.

the Holy Spirit is the author of this work in us, so that although it is our duty, it is his grace and strength whereby it is performed; as also the manner how it is wrought by him, which is principally intended: [1.]

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.

The Holy Spirit is promised of God to be given to us, to do this work (of mortification). The taking away of the stony heart, that is, the stubborn, proud, rebelliuos, unbelieving heart, is, in general, the workd of mortification that we treat of.

Let not that man think he makes any progress in holiness who walks not over the bellies of his lusts. He who doth not kill sin in this way takes no steps towards his journey's end. He who finds not opposition from it, and who sets not himself in every particular to its mortification, is at peace with it, not dying to it. This

What promise hath any unregenerate man to countenance him in this work? what assistance for the performance of it? Can sin be killed without an interest in the death of Christ, or mortified without the Spirit?

Every unmortified sin will certainly do two things: [1.] It will weaken the soul, and deprive it of its vigour. [2.] It will darken the soul, and deprive it of its comfort and peace.