So great an advantage is given to sin and Satan by your temper and disposition, that without extraordinary watchfulness, care, and diligence, they will prevail against your soul.

If we do not abide in prayer, we will abide in temptation. Let this be one aspect of our daily intercession: "God, preserve my soul, and keep my heart and all its ways so that I will not be entangled." When this is true in our lives, a passing temptation will not overcome us. We will remain free while others lie in bondage.

The indulgence of one sin opens the door to further sins. The indulgence of one sin diverts the soul from the use of those means by which all other sins should be resisted.

If we do not abide in prayer, we will abide in temptation.

Spiritual wisdom consists in finding out the subtleties, policies, and depths of any indwelling sin... to trace this serpent in all its turnings and windings; be able to say, at its most secret actings, 'This is your old way and course; I know what you aim at.'

He, then, that would really, thoroughly, and acceptably mortify any disquieting lust, let him take care to be equally diligent in all parts of obedience, and know that every lust, every omission of duty, is burdensome to God, though but one is so to him.

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.