Satan can only attack us from the outside in. He may work through the lust and sensations of the body or through the mind and emotion of the soul, for those two belong to the outward man.
Watchman NeePut very simply, Satan's power in the world is everywhere. Yet wherever men and women walk in the Spirit, sensitive to the anointing they have from God, that power of his just evaporates. There is a line drawn by God, a boundary where by virtue of his own very presence Satan's writ does not run. Let God but occupy all the space himself, and what room is left for the evil one?
Watchman NeeFrequently what we say is rest is merely laziness. Our body requires respite and so does our mind and spirit. But a person should never rest because of a laziness which arises from the evil nature in his emotion. How often laziness and emotional distaste for work join to employ physical fatigue as a cover-up.
Watchman Nee