OF THE ASSAULTS OF THE DEMONS (FIVE ARTICLES)
We now consider the assaults of the demons. Under this head there are five points of inquiry:
(1) Whether men are assailed by the demons?
(2) Whether to tempt is proper to the devil?
(3) Whether all the sins of men are to be set down to the assaults or temptations of the demons?
(4) Whether they can work real miracles for the purpose of leading men astray?
(5) Whether the demons who are overcome by men, are hindered from making further assaults?
Whether men are assailed by the demons?
Objection 1: It would seem that men are not assailed by the demons. For angels are sent by God to guard man. But demons are not sent by God: for the demons' intention is the loss of souls; whereas God's is the salvation of souls. Therefore demons are not deputed to assail man.
Objection 2: Further, it is not a fair fight, for the weak to be set against the strong, and the ignorant against the astute. But men are weak and ignorant, whereas the demons are strong and astute. It is not therefore to be permitted by God, the author of all justice, that men should be assailed by demons.
Objection 3: Further, the assaults of the flesh and the world are enough for man's exercise. But God permits His elect to be assailed that they may be exercised. Therefore there is no need for them to be assailed by the demons.
On the contrary, The Apostle says ( Eph. 6:12 ): "Our wrestling is not against flesh and blood; but against Principalities and Powers, against the rulers of the world of this darkness, against the spirits of wickedness in the high places."
I answer that, Two things may be considered in the assault of the demons---the assault itself, and the ordering thereof. The assault itself is due to the malice of the demons, who through envy endeavor to hinder man's progress; and through pride usurp a semblance of Divine power, by deputing certain ministers to assail man, as the angels of God in their various offices minister to man's salvation. But the ordering of the assault is from God, Who knows how to make orderly use of evil by ordering it to good. On the other hand, in regard to the angels, both their guardianship and the ordering thereof are to be referred to God as their first author.
Reply to Objection 1: The wicked angels assail men in two ways. Firstly by instigating them to sin; and thus they are not sent by God to assail us, but are sometimes permitted to do so according to God's just judgments. But sometimes their assault is a punishment to man: and thus they are sent by God; as the lying spirit was sent to punish Achab, King of Israel, as is related in 3 Kings 22:20. For punishment is referred to God as its first author. Nevertheless the demons who are sent to punish, do so with an intention other than that for which they are sent; for they punish from hatred or envy; whereas they are sent by God on account of His justice.
Reply to Objection 2: In order that the conditions of the fight be not unequal, there is as regards man the promised recompense, to be gained principally through the grace of God, secondarily through the guardianship of the angels. Wherefore (4 Kings 6:16), Eliseus said to his servant: "Fear not, for there are more with us than with them."
Reply to Objection 3: The assault of the flesh and the world would suffice for the exercise of human weakness: but it does not suffice for the demon's malice, which makes use of both the above in assailing men. But by the Divine ordinance this tends to the glory of the elect.
Whether to tempt is proper to the devil?
Objection 1: It would seem that to tempt is not proper to the devil. For God is said to tempt, according to Gn. 22:1, "God tempted Abraham." Moreover man is tempted by the flesh and the world. Again, man is said to tempt God, and to tempt man. Therefore it is not proper to the devil to tempt.
Objection 2: Further, to tempt is a sign of ignorance. But the demons know what happens among men. Therefore the demons do not tempt.
Objection 3: Further, temptation is the road to sin. Now sin dwells in the will. Since therefore the demons cannot change man's will, as appears from what has been said above (Q[111], A[2]), it seems that it is not in their province to tempt.
On the contrary, It is written ( 1 Thess. 3:5 ): "Lest perhaps he that tempteth should have tempted you": to which the gloss adds, "that is, the devil, whose office it is to tempt."
I answer that, To tempt is, properly speaking, to make trial of something. Now we make trial of something in order to know something about it: hence the immediate end of every tempter is knowledge. But sometimes another end, either good or bad, is sought to be acquired through that knowledge; a good end, when, for instance, one desires to know of someone, what sort of a man he is as to knowledge, or virtue, with a view to his promotion; a bad end, when that knowledge is sought with the purpose of deceiving or ruining him.
From this we can gather how various beings are said to tempt in various ways. For man is said to tempt, sometimes indeed merely for the sake of knowing something; and for this reason it is a sin to tempt God; for man, being uncertain as it were, presumes to make an experiment of God's power. Sometimes too he tempts in order to help, sometimes in order to hurt. The devil, however, always tempts in order to hurt by urging man into sin. In this sense it is said to be his proper office to tempt: for thought at times man tempts thus, he does this as minister of the devil. God is said to tempt that He may know, in the same sense as that is said to know which makes others to know. Hence it is written ( Dt. 13:3 ): "The Lord your God trieth you, that it may appear whether you love him."
The flesh and the world are said to tempt as the instruments or matter of temptations; inasmuch as one can know what sort of man someone is, according as he follows or resists the desires of the flesh, and according as he despises worldly advantages and adversity: of which things the devil also makes use in tempting.
Thus the reply to the first objection is clear.