1
A man may beat down the bitter fruit from an evil tree until he is weary; while the root abides in strength and vigour, the beating down of the present fruit will not hinder it from bringing forth more. This is the folly of some men; they set themselves with all earnestness and diligence against the appearing eruption of lust, but, leaving the principle and root untouched, perhaps unsearched out, they make but little or no progress in this work of mortification.John Owen
2
Set faith at work on Christ for the killing of thy sin. His blood is the great sovereign remedy for sin-sick souls. Live in this, and thou wilt die a conqueror; yea, thou wilt, through the good providence of God, live to see thy lust dead at thy feet.John Owen
3
Not to be daily employing the Spirit and new nature for the mortifying of sin is to neglect that excellent succor which God has given us against our greatest enemy. If we neglect to make use of what we have received, God may justly hold his hand from giving us more. His graces, as well as his gifts, are bestowed on us to use, exercise, and trade with. Not to be daily mortifying sin is to sin against the goodness, kindness, wisdom, grace, and love of God, who has furnished us with a principle of doing it. .John Owen
4
Sin aims always at the utmost; every time it rises up to tempt or entice, might it have its own course, it would go out to the utmost sin in that kind. Every unclean thought or glance would be adultery if it could; every covetous desire would be oppression, every thought of unbelief would be atheism, might it grow to its head. Men may come to that, that sin may not be heard speaking a scandalous word in their hearts - that is, provoking to any great sin with scandal in its mouth; but yet every rise of lust, might it have its course, would come to the height of villainy: it is like the grave that is never satisfied.John Owen