Sin aims always at the utmost; every time it rises up to tempt or entice, if it has its own way it will go out to the utmost sin in that kind. Every unclean thought or glance would be adultery if it could, every thought of unbelief would be atheism if allowed to develop. Every rise of lust, if it has its way reaches the height of villainy; it is like the grave that is never satisfied. The deceitfulness of sin is seen in that it is modest in its first proposals but when it prevails it hardens men’s hearts, and brings them to ruin.

I do not understand how a man can be a true believer, in whom sin is not the greatest burden, sorrow and trouble.

The natural man "cannot see or discern that divine excellency in the Scripture, without an apprehension whereof no man can believe it aright to be the word of God."

He works in us and with us, not against us or without us; so that his assistance is an encouragement to the facilitating of the work, and no occasion of neglect as to the work itself.

A natural man hath no such thing as free-will at all, if you take it for a power of doing that which is good and well-pleasing unto God in things spiritual.

When sin lets us alone we may let sin alone.

Let no man think to kill sin with few, easy, or gentle strokes. He who hath once smitten a serpent, if he follow not on his blow until it be slain, may repent that ever he began the quarrel. And so he who undertakes to deal with sin, and pursues it not constantly to the death.