Negligence in prayer withers the inner man. Nothing can be a substitute for it, not even Christian work. Many are so preoccupied with work that they allow little time for prayer. Hence they cannot cast out demons. Prayer enables us first inwardly to overcome the enemy and then outwardly to deal with him.

The Finest of the Wheat, vol 2: Selected Excerpts from the Published Works of Watchman Nee (ed. Christian Fellowship Publishers, 1993) - ISBN: 9780935008784