I answer that, The inferior angels never enlighten the superior, but are always enlightened by them. The reason is, because, as above explained (Q. 105, A. 6), one order is under another, as cause is under cause; and hence as cause is ordered to cause, so is order to order. Therefore there is no incongruity if sometimes anything is done outside the order of the inferior cause, to be ordered to the superior cause, as in human affairs the command of the president is passed over from obedience to the prince. So it happens that God works miraculously outside the order of corporeal nature, that men may be ordered to the knowledge of Him. But the passing over of the order that belongs to spiritual substances in no way belongs to the ordering of men to God; since the angelic operations are not made known to us; as are the operations of sensible bodies. Thus the order which belongs to spiritual substances is never passed over by God; so that the inferiors are always moved by the superior, and not conversely.
Reply Obj. 1: The ecclesiastical hierarchy imitates the heavenly in some degree, but not by a perfect likeness. For in the heavenly hierarchy the perfection of the order is in proportion to its nearness to God; so that those who are the nearer to God are the more sublime in grade, and more clear in knowledge; and on that account the superiors are never enlightened by the inferiors, whereas in the ecclesiastical hierarchy, sometimes those who are the nearer to God in sanctity, are in the lowest grade, and are not conspicuous for science; and some also are eminent in one kind of science, and fail in another; and on that account superiors may be taught by inferiors.
Reply Obj. 2: As above explained, there is no similarity between what God does outside the order of corporeal nature, and that of spiritual nature. Hence the argument does not hold.
Reply Obj. 3: An angel turns voluntarily to enlighten another angel, but the angel's will is ever regulated by the Divine law which made the order in the angels. _______________________
FOURTH ARTICLE [I, Q. 106, Art. 4]
Whether the Superior Angel Enlightens the Inferior As Regards All He
Himself Knows?
Objection 1: It would seem that the superior angel does not enlighten the inferior concerning all he himself knows. For Dionysius says (Coel. Hier. xii) that the superior angels have a more universal knowledge; and the inferior a more particular and individual knowledge. But more is contained under a universal knowledge than under a particular knowledge. Therefore not all that the superior angels know, is known by the inferior, through these being enlightened by the former.
Obj. 2: Further, the Master of the Sentences (ii, D, 11) says that the superior angels had long known the Mystery of the Incarnation, whereas the inferior angels did not know it until it was accomplished. Thus we find that on some of the angels inquiring, as it were, in ignorance: "Who is this King of glory?" other angels, who knew, answered: "The Lord of Hosts, He is the King of glory," as Dionysius expounds (Coel. Hier. vii). But this would not apply if the superior angels enlightened the inferior concerning all they know themselves. Therefore they do not do so.
Obj. 3: Further, if the superior angels enlighten the inferior about all they know, nothing that the superior angels know would be unknown to the inferior angels. Therefore the superior angels could communicate nothing more to the inferior; which appears open to objection. Therefore the superior angels enlighten the inferior in all things.
On the contrary, Gregory [*Peter Lombard, Sent. ii, D, ix; Cf. Gregory, Hom. xxxiv, in Ev.] says: "In that heavenly country, though there are some excellent gifts, yet nothing is held individually." And Dionysius says: "Each heavenly essence communicates to the inferior the gift derived from the superior" (Coel. Hier. xv), as quoted above (A. 1).