Mouravieff says in Gnosis Vol. I :
"As long as man accepts the principle of the final annihilation of his Personality without a fight, he can carry on in life without attracting the increasing pressures of the General Law upon himself.
"The case is totally different if he struggles to surpass the limits which it imposes. It acts simultaneously on several planes: physical, mental, and moral. Its action on the moral plane is conceived by man, since time immemorial, in the form of a personification: the Devil.
"In the orthodox Tradition demonology occupies a considerable place. We find there practical constatations, fine and profound observations on the highly sophisticated and insidious forms that the Devil's action takes in very varied circumstances, in which it goes as far as using the good faith of humans for its own ends.
"We will also find precious advice, based on accumulated experience over the ages, which is particularly helpful to students of esoteric science; because once the first positive results are obtained those students will unmistakably run up against the active opposition to the law and the GAME OF THE CRAFTY ONE.
"It must be realized that in placing himself under the aegis of the Law of Exception, man goes against the General Law, which he is even called upon to overthrow, if only on an individual scale. He must not forget--under penalty of 'surprise attack'--the salvation depends on victory over the Devil, which as we have said, is the personalized moral aspect of the General Law. This is so, even though this, being a cosmic law, is naturally a divine law. One must not be afraid, as the Law of Exception is also a divine law. In choosing it, man continues to serve the interests of the whole, but differently and in an incomparably more efficient manner. During his fight against the first law, he is subject to tests that often take the form of temptations. In orthodox Doctrine deep studies are devoted to this theme, As stated above, they contain precious advice of a practical nature, details of which we cannot cover in this present book. We are however permitted to draw attention to the indirect nature of the diabolical action. If, aiming straight towards his goal, which is liberation and salvation, the seeker successfully overcomes the obstacles and by this shows proof of a strength that would permit him to defy the authority of the General Law, the latter will begin to act upon him indirectly, generally by the mediation of his near ones if they do not follow the same path: this action occurs on the moral plane, and often takes emotional forms appealing to his most noble, generous, and disinterested sentiments: to his charity; his obligations; his pity. It impels him down blind alleys, insinuating that he will be returning to his duty, that by so doing he will go on walking in the right path, etc. This will clarify the profound saying of Jesus that: 'A man's worst enemies are those of his own household.'