“Sin also carries on its war by entangling the affections and drawing them into an alliance against the mind. Grace may be enthroned in the mind, but if sin controls the affections, it has seized a fort from which it will continually assault the soul. Hence, as we shall see, mortification is chiefly directed to take place upon the affections.”

“Sin does not only still abide in us, but is still acting, still laboring to bring forth the deeds of the flesh. When sin lets us alone we may let sin alone; but as sin is never less quiet than when it seems to be the most quiet, and its waters are for the most part deep when they are still, so ought our contrivances against it be vigorous at all times and in all conditions, even where there is least suspicion.”

“When we realize a constant enemy of the soul abides within us, what diligence and watchfulness we should have! How woeful is the sloth and negligence then of so many who live blind and asleep to this reality of sin. There is an exceeding efficacy nad power in the indwelling sin of believers, for it constantly inclines itself towards evil. We need to be awake, then, if our hearts would know the ways of God. Our enemy is not only upon us, as it was with Samson, but it is also in us.”

“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.”

“If the heart be chiefly and directly fixed on God, and the soul engaged to glorify him, some degree of religious affection will be the effect and attendant of it. But to seek after affection directly and chiefly; to have the heart principally set upon that; is to place it in the room of God and his glory. If it be sought, that others may take notice of it, and admire us for our spirituality and forwardness in religion, it is then damnable pride; if for the sake of feeling the pleasure of being affected, it is then idolatry and self-gratification.”

“Would a soul continually eye His everlasting tenderness and compassion...[then] it could not bear an hour's absence from Him; whereas now, perhaps, it cannot watch with him one hour.”

“Steadfastness in believing doth not exclude all temptations from without. When we say a tree is firmly rooted, we do not say the wind never blows upon it.”