On the Making of Man by Gregory of Nyssa — Read

But if someone, beholding the present course of the world, by which intervals of time are marked, going on in a certain order, should say that it is not possible that the predicted stoppage of these moving things should take place, such a man clearly also does not believe that in the beginning the heaven and the earth were made by God; for he who admits a beginning of motion surely does not doubt as to its also having an end; and he who does not allow its end, does not admit its beginning either; but as it is by believing that "we understand that the worlds were framed by the word of God," as the apostle says, "so that things which are seen were not made of things which do appear," we must use the same faith as to the word of God when He foretells the necessary stoppage of existing things.

The question of the "how" must, however, be put beyond the reach of our meddling; for even in the case mentioned it was "by faith" that we admitted that the thing seen was framed from things not yet apparent, omitting the search into things beyond our reach. And yet our reason suggests difficulties on many points, offering no small occasions for doubt as to the things which we believe.