HKB
it will remain, accordingly as it agrees with the attainment of the end. Thus also the various ranks of soldiers have different duties to perform in battle and in triumph.
Reply Obj. 1: The principalities and powers will come to an end in that final consummation as regards their office of leading others to their end; because when the end is attained, it is no longer necessary to tend towards the end. This is clear from the words of the Apostle, "When He shall have delivered up the kingdom of God and the Father," i.e. when He shall have led the faithful to the enjoyment of God Himself.
Reply Obj. 2: The actions of angels over the other angels are to be considered according to a likeness to our own intellectual actions. In ourselves we find many intellectual actions which are ordered according to the order of cause and effect; as when we gradually arrive at one conclusion by many middle terms. Now it is manifest that the knowledge of a conclusion depends on all the preceding middle terms not only in the new acquisition of knowledge, but also as regards the keeping of the knowledge acquired. A proof of this is that when anyone forgets any of the preceding middle terms he can have opinion or belief about the conclusion, but not knowledge; as he is ignorant of the order of the causes. So, since the inferior angels know the types of the Divine works by the light of the superior angels, their knowledge depends on the light of the superior angels not only as regards the acquisition of knowledge, but also as regards the preserving of the knowledge possessed. So, although after the Judgment the inferior angels will not progress in the knowledge of some things, still this will not prevent their being enlightened by the superior angels.
Reply Obj. 3: Although after the Day of Judgment men will not be led any more to salvation by the ministry of the angels, still those who are already saved will be enlightened through the angelic ministry.
EIGHTH ARTICLE [I, Q. 108, Art. 8]
Whether Men Are Taken Up into the Angelic Orders?
Objection 1: It would seem that men are not taken up into the orders of the angels. For the human hierarchy is stationed beneath the lowest heavenly hierarchy, as the lowest under the middle hierarchy and the middle beneath the first. But the angels of the lowest hierarchy are never transferred into the middle, or the first. Therefore neither are men transferred to the angelic orders.
Obj. 2: Further, certain offices belong to the orders of the angels, as to guard, to work miracles, to coerce the demons, and the like; which do not appear to belong to the souls of the saints. Therefore they are not transferred to the angelic orders.
Obj. 3: Further, as the good angels lead on to good, so do the demons to what is evil. But it is erroneous to say that the souls of bad men are changed into demons; for Chrysostom rejects this (Hom. xxviii in Matt.). Therefore it does not seem that the souls of the saints will be transferred to the orders of angels.