In all the predictions of diviners or oracles, when they are followed by fulfilment, we can hardly disavow that the evil spirit intervenes, and discovers the future to those who consult him. St. Augustine, in his book de Divinatione Dæmonum,[[199]] or of predictions made by the evil spirit, when they are fulfilled, supposes that the demons are of an aërial nature, and much more subtile than bodies in general; insomuch that they surpass beyond comparison the lightness both of men and the swiftest animals, and even the flight of birds, which enables them to announce things that are passing in very distant places, and beyond the common reach of men. Moreover, as they are not subject to death as we are, they have acquired infinitely more experience than even those who possess the most among mankind, and are the most attentive to what happens in the world. By that means they can sometimes predict things to come, announce several things at a distance, and do some wonderful things; which has often led mortals to pay them divine honors, believing them to be of a nature much more excellent than their own.
But when we reflect seriously on what the demons predict, we may remark that often they announce nothing but what they are to do themselves.[[200]] For God permits them, sometimes, to cause maladies, corrupt the air, and produce in it qualities of an infectious nature, and to incline the wicked to persecute the worthy. They perform these operations in a hidden manner, by resources unknown to mortals, and proportionate to the subtilty of their own nature. They can announce what they have foreseen must happen by certain natural tokens unknown to men, like as a physician foresees by the secret of his art the symptoms and the consequences of a malady which no one else can. Thus, the demon, who knows our constitution and the secret tendency of our humors, can foretell the maladies which are the consequences of them. He can also discover our thoughts and our secret wishes by certain external motions, and by certain expressions we let fall by chance, whence he infers that men would do or undertake certain things consequent upon these thoughts or inclinations.
But his predictions are far from being comparable with those revealed to us by God, through his angels, or the prophets; these are always certain and infallible, because they have for their principle God, who is truth; while the predictions of the demons are often deceitful, because the arrangements on which they are founded can be changed and deranged, when they least expect it, by unforeseen and unexpected circumstances, or by the authority of superior powers overthrowing the first plans, or by a peculiar disposition of Providence, who sets bounds to the power of the prince of darkness. Sometimes, also, demons purposely deceive those who have the weakness to place confidence in them. But, usually, they throw the fault upon those who have taken on themselves to interpret their discourses and predictions.
So says St. Augustine;[[201]] and although we do not quite agree with him, but hold the opinion that souls, angels and demons are disengaged from all matter or substance, still we can apply his reasoning to evil spirits, even upon the supposition that they are immaterial—and own that sometimes they can predict the future, and that their predictions may be fulfilled; but that is not a proof of their being sent by God, or inspired by his Spirit. Even were they to work miracles, we must anathematize them as soon as they turn us from the worship of the true God, or incline us to irregular lives.
Footnotes:
[[190]] Deut. xiii. 1, 2.
[[191]] Isaiah xli. 22, 23.
[[192]] Tertull. Apolog. c. 20.
[[193]] Hieronym. in Dan.
[[194]] Matt. xxiv. 11, 24.