Reply Obj. 1: Man was not intended to secure his ultimate perfection at once, like the angel. Hence a longer way was assigned to man than to the angel for securing beatitude.
Reply Obj. 2: The angel is above the time of corporeal things; hence the various instants regarding the angels are not to be taken except as reckoning the succession of their acts. Now their act which merited beatitude could not be in them simultaneously with the act of beatitude, which is fruition; since the one belongs to imperfect grace, and the other to consummate grace. Consequently, it remains for different instants to be conceived, in one of which the angel merited beatitude, and in another was beatified.
Reply Obj. 3: It is of the nature of an angel instantly to attain the perfection unto which he is ordained. Consequently, only one meritorious act is required; which act can so far be called an interval as through it the angel is brought to beatitude. _______________________
SIXTH ARTICLE [I, Q. 62, Art. 6]
Whether the Angels Receive Grace and Glory According to the Degree of
Their Natural Gifts?
Objection 1: It would seem that the angels did not receive grace and glory according to the degree of their natural gifts. For grace is bestowed of God's absolute will. Therefore the degree of grace depends on God's will, and not on the degree of their natural gifts.
Obj. 2: Further, a moral act seems to be more closely allied with grace than nature is; because a moral act is preparatory to grace. But grace does not come "of works," as is said Rom. 11:6. Therefore much less does the degree of grace depend upon the degree of their natural gifts.
Obj. 3: Further, man and angel are alike ordained for beatitude or grace. But man does not receive more grace according to the degree of his natural gifts. Therefore neither does the angel.
On the contrary, Is the saying of the Master of the Sentences (Sent. ii, D, 3) that "those angels who were created with more subtle natures and of keener intelligence in wisdom, were likewise endowed with greater gifts of grace."
I answer that, It is reasonable to suppose that gifts of graces and perfection of beatitude were bestowed on the angels according to the degree of their natural gifts. The reason for this can be drawn from two sources. First of all, on the part of God, Who, in the order of His wisdom, established various degrees in the angelic nature. Now as the angelic nature was made by God for attaining grace and beatitude, so likewise the grades of the angelic nature seem to be ordained for the various degrees of grace and glory; just as when, for example, the builder chisels the stones for building a house, from the fact that he prepares some more artistically and more fittingly than others, it is clear that he is setting them apart for the more ornate part of the house. So it seems that God destined those angels for greater gifts of grace and fuller beatitude, whom He made of a higher nature.