All other ways of mortification are vain, all helps leave us helpless; it must be done by the Spirit.

Indwelling sin always abides whilst we are in this world; therefore it is always to be mortified.

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.

There is a state of perfect peace with God to be attained under imperfect obedience.

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.

The purpose of our holy and righteous God was to save his church, but their sin could not go unpunished. It was, therefore, necessary that the punishment for that sin be transferred from those who deserved it but could not bear it, to one who did not deserve it but was able to bear it.

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.