OF THE GUARDIANSHIP OF THE GOOD ANGELS (EIGHT ARTICLES)
We next consider the guardianship exercised by the good angels; and their warfare against the bad angels. Under the first head eight points of inquiry arise:
(1) Whether men are guarded by the angels?
(2) Whether to each man is assigned a single guardian angel?
(3) Whether the guardianship belongs only to the lowest order of angels?
(4) Whether it is fitting for each man to have an angel guardian?
(5) When does an angel's guardianship of a man begin?
(6) Whether the angel guardians always watch over men?
(7) Whether the angel grieves over the loss of the one guarded?
(8) Whether rivalry exists among the angels as regards their guardianship?
Whether men are guarded by the angels?
Objection 1: It would seem that men are not guarded by the angels. For guardians are deputed to some because they either know not how, or are not able, to guard themselves, as children and the sick. But man is able to guard himself by his free-will; and knows how by his natural knowledge of natural law. Therefore man is not guarded by an angel.
Objection 2: Further, a strong guard makes a weaker one superfluous. But men are guarded by God, according to Ps. 120:4 : "He shall neither slumber nor sleep, that keepeth Israel." Therefore man does not need to be guarded by an angel.
Objection 3: Further, the loss of the guarded redounds to the negligence of the guardian; hence it was said to a certain one: "Keep this man; and if he shall slip away, thy life shall be for his life" (3 Kings 20:39). Now many perish daily through falling into sin; whom the angels could help by visible appearance, or by miracles, or in some such-like way. The angels would therefore be negligent if men are given to their guardianship. But that is clearly false. Therefore the angels are not the guardians of men.
On the contrary, It is written ( Ps. 90:11 ): "He hath given His angels charge over thee, to keep thee in all thy ways."
I answer that, According to the plan of Divine Providence, we find that in all things the movable and variable are moved and regulated by the immovable and invariable; as all corporeal things by immovable spiritual substances, and the inferior bodies by the superior which are invariable in substance. We ourselves also are regulated as regards conclusions, about which we may have various opinions, by the principles which we hold in an invariable manner. It is moreover manifest that as regards things to be done human knowledge and affection can vary and fail from good in many ways; and so it was necessary that angels should be deputed for the guardianship of men, in order to regulate them and move them to good.
Reply to Objection 1: By free-will man can avoid evil to a certain degree, but not in any sufficient degree; forasmuch as he is weak in affection towards good on account of the manifold passions of the soul. Likewise universal natural knowledge of the law, which by nature belongs to man, to a certain degree directs man to good, but not in a sufficient degree; because in the application of the universal principles of law to particular actions man happens to be deficient in many ways. Hence it is written ( Wis. 9:14 ): "The thoughts of mortal men are fearful, and our counsels uncertain." Thus man needs to be guarded by the angels.
Reply to Objection 2: Two things are required for a good action; first, that the affection be inclined to good, which is effected in us by the habit of mortal virtue. Secondly, that reason should discover the proper methods to make perfect the good of virtue; this the Philosopher (Ethic. vi) attributes to prudence. As regards the first, God guards man immediately by infusing into him grace and virtues; as regards the second, God guards man as his universal instructor, Whose precepts reach man by the medium of the angels, as above stated (Q[111], A[1]).
Reply to Objection 3: As men depart from the natural instinct of good by reason of a sinful passion, so also do they depart from the instigation of the good angels, which takes place invisibly when they enlighten man that he may do what is right. Hence that men perish is not to be imputed to the negligence of the angels but to the malice of men. That they sometimes appear to men visibly outside the ordinary course of nature comes from a special grace of God, as likewise that miracles occur outside the order of nature.
Whether each man is guarded by an angel?
Objection 1: It would seem that each man is not guarded by an angel. For an angel is stronger than a man. But one man suffices to guard many men. Therefore much more can one angel guard many men.
Objection 2: Further, the lower things are brought to God through the medium of the higher, as Dionysius says (Coel. Hier. iv, xiii). But as all the angels are unequal (Q[50], A[4]), there is only one angel between whom and men there is no medium. Therefore there is only one angel who immediately keeps men.
Objection 3: Further, the greater angels are deputed to the greater offices. But it is not a greater office to keep one man more than another; since all men are naturally equal. Since therefore of all the angels one is greater than another, as Dionysius says (Coel. Hier. x), it seems that different men are not guarded by different angels.
On the contrary, On the text, "Their angels in heaven," etc. ( Mat. 8:10 ), Jerome says: "Great is the dignity of souls, for each one to have an angel deputed to guard it from its birth."
I answer that, Each man has an angel guardian appointed to him. This rests upon the fact that the guardianship of angels belongs to the execution of Divine providence concerning men. But God's providence acts differently as regards men and as regards other corruptible creatures, for they are related differently to incorruptibility. For men are not only incorruptible in the common species, but also in the proper forms of each individual, which are the rational souls, which cannot be said of other incorruptible things. Now it is manifest that the providence of God is chiefly exercised towards what remains for ever; whereas as regards things which pass away, the providence of God acts so as to order their existence to the things which are perpetual. Thus the providence of God is related to each man as it is to every genus or species of things corruptible. But, according to Gregory (Hom. xxxiv in Evang.), the different orders are deputed to the different "genera" of things, for instance, the "Powers" to coerce the demons, the "Virtues" to work miracles in things corporeal; while it is probable that the different species are presided over by different angels of the same order. Hence it is also reasonable to suppose that different angels are appointed to the guardianship of different men.