Thomas Aquinas

“ Now it pertains to the dignity of judicial power to have certain signs that induce people to reverence and subjection: and consequently many signs will precede the advent of Christ when He shall come to judgment, in order that the hearts of men be brought to subjection to the coming judge, and be prepared for the judgment, being forewarned by those signs. ”

“ Rabanus is speaking of the time preceding the judgment: wherefore he adds that when the judgment day is over the words of Isaias shall be fulfilled.
Reply to Objection 2: Light is in the heavenly bodies not only for the purpose of causing generation in these lower bodies, but also for their own perfection and beauty. Hence it does not follow that where generation ceases, the light of the heavenly bodies will cease, but rather that it will increase. ”

“ If, however, they be removed, there would still be no parallel between them and light, since the elemental qualities are in opposition to one another, so that their action is corruptive: whereas light is a principle of action not by way of opposition, but by way of a principle regulating things in opposition to one another and bringing them back to harmony. ”

“ Nor is there a parallel with the movement of heavenly bodies, for movement is the act of that which is imperfect, wherefore it must needs cease when the imperfection ceases: whereas this cannot be said of light.
Art. 3 - Whether the virtues of heaven will be moved when our Lord shall come? Objection 1: It would seem that the virtues of heaven will not be moved when our Lord shall come. For the virtues of heaven can de. note only the blessed angels. Now immobility is essential to blessedness. Therefore it will be impossible for them to be moved. ”

“ In another sense it is employed to denote all the angels: and then they are said to the question at issue it may be taken either way. For in the text (Sent. iv, D, 48) it is explained according to the second acceptation, so as to denote all the angels: and then they are said to be moved through wonder at the renewing of the world, as stated in the text. It can also be explained in reference to virtue as the name of a particular order ”