The pendulum of popular belief about Satan tends to swing between two extremes. On one side there are those who believe that he doesn’t exist at all, or if he does exist. he is a mere impersonal evil “force,” sort of a collective evil that finds its origin in the sin of society. On the other side there are those who have a preoccupied fixation, a cultic focus of attention upon him that diverts their gaze from Christ. Either way Satan gains some ground. If he can persuade people that he does not exist, he can work his wiles without being detected or resisted. If he can get people to become preoccupied with him, he can lure them into the occult.
Personally I tend to be rather Barthian on the subject – (See his Church Dogmatics, III,3 – Sec. 50).
Under the control of God world-occurrance is threatened and actually corrupted by the nothingness which is inimical to the will of the Creator and therefore to the nature of His good creature. … God determines the sphere, the manner, the measure and the subordinate relationship to His Word and work in which it may still operate.