You are under the power of no other enemy, are held in no other captivity and want no other deliverance but from the power of your own earthly self. This is the one murderer of the divine life within you. It is your own Cain that murders your own Abel. Now everything that your earthly nature does is under the influence of self-will, self-love, and self-seeking, whether it carries you to laudable or blamable practices; all is done in the nature and spirit of Cain and only helps you to such goodness as when Cain slew his brother. For every action and motion of self has the spirit of Antichrist and murders the divine life within you.
William Law: The Spirit of Love.