Believers today very much lack knowledge as to the existence and operation of the human spirit. Many are unaware that in addition to their mind, emotion and will they also have a spirit. Even when they have heard of the spirit, many Christians either consider their mind, emotion or will as the spirit or else plainly confess they know not where their spirit is. Such ignorance enormously affects cooperation with God, control over self, and war against Satan, the performance of which in all cases requires the operation of the spirit. It is imperative that believers recognize a spirit exists within them, something extra to thought, knowledge and imagination of the mind, something beyond affection, sensation and pleasure of the emotion, something additional to desire, decision and action of the will. This component is far more profound than these faculties. God"s people not only must know they possess a spirit; they also must understand how this organ operates -its sensitivity, its work, its power, its laws.