It was noticed above that St. Paul has no doubt at all that moral evil has its origin and spring in the dark background behind human nature--in the rebel wills of devils. It has become customary to regard belief in devils or angels as fanciful and perhaps superstitious. Now no doubt theological and popular fancy has intruded itself into the things it has not seen, and, instead of the studiously vague[1] language of St. Paul, has developed a sort of geography and ethnology for spirits good and bad which is mythological and allied to superstition. But it has acted in the same way, and shown the same resentment of the discipline of ignorance, in the case of even more central spiritual realities. No {240} doubt again the belief in the devil has sometimes become, in practical force, belief in a rival God. But this sort of Manichaeism or dualism represents a very permanent tendency in the untrained religious instincts of men, which the Bible is occupied in restraining. In the Bible certainly Satan and his hosts are rebel angels and not rival Gods. Once more undoubtedly demonology has been a source of much misery and many degrading practices. But demonology represents a natural religious instinct. It is older than the Bible. And what our religion has done, where it has been true to itself, is to purge away the noxious and non-moral superstitions. St. Paul is representative of true Christianity in his stern refusal to use the services of contemporary soothsaying and magic and sorcery[2]. One has only to compare the exorcisms of our Lord with contemporary Jewish exorcism to note the moral difference. And every truth has its exaggeration and its abuse. The question still remains; are there no spiritual beings but men? Is there no moral evil, but in the human heart? Our Lord gives the most emphatic negative answer. His teaching about evil (and good) spirits is unmistakable and {241} constant. If He is an absolutely trustworthy teacher in the spiritual concerns of life, then temptation from evil spirits is a reality, and a reality to be held constantly in view. And our Lord's authority is confirmed by our own experiences. Sometimes experience irresistibly suggests to us the presence of unseen bad companions who can make vivid suggestions to our minds. Or we are impressed like St. Paul with the delusive, lying character of evil, which makes the belief in a malevolent will almost inevitable. Or the continuity in evil influences, social or personal, seems to disclose to us an organized plan or 'method[3]' a kingdom of evil. It is then in view of unseen but personal spiritual adversaries organized against us as armies, under leaders who have at their control wide-reaching social forces of evil, and who intrude themselves into the highest spiritual regions 'the heavenly places' to which in their own nature they belong, that St. Paul would have us equip ourselves for fighting in 'the armour of light[4].'