by Athanasius (3rd – 4th century)
From the Book, “On the Incarnation of the Word” (Chapter 3, 16-19)
He banished death from us and made us anew; and, invisible and imperceptible as in Himself He is, He became visible through His works and revealed Himself as the Word of the Father, the Ruler and King of the whole creation.
There is a paradox in this last statement which we must now examine. The Word was not hedged in by His body, nor did His presence in the body prevent His being present elsewhere as well. When He moved His body He did not cease also to direct the universe by His Mind and might. No. The marvelous truth is, that being the Word, so far from being Himself contained by anything, He actually contained all things Himself. In creation He is present everywhere, yet is distinct in being from it; ordering, directing, giving life to all, containing all, yet is He Himself the Uncontained, existing solely in His Father. As with the whole, so also is it with the part. Existing in a human body, to which He Himself gives life, He is still Source of life to all the universe, present in every part of it, yet outside the whole; and He is revealed both through the works of His body and through His activity in the world. It is, indeed, the function of soul to behold things that are outside the body, but it cannot energize or move them. A man cannot transport things from one place to another, for instance, merely by thinking about them; nor can you or I move the sun and the stars just by sitting at home and looking at them. With the Word of God in His human nature, however, it was otherwise. His body was for Him not a limitation, but an instrument, so that He was both in it and in all things, and outside all things, resting in the Father alone. At one and the same time–this is the wonder–as Man He was living a human life, and as Word He was sustaining the life of the universe, and as Son He was in constant union with the Father. Not even His birth from a virgin, therefore, changed Him in any way, nor was He defiled by being in the body. Rather, He sanctified the body by being in it. For His being in everything does not mean that He shares the nature of everything, only that He gives all things their being and sustains them in it. Just as the sun is not defiled by the contact of its rays with earthly objects, but rather enlightens and purifies them, so He Who made the sun is not defiled by being made known in a body, but rather the body is cleansed and quickened by His indwelling, “Who did no sin, neither was guile found in His mouth.” 
You must understand, therefore, that when writers on this sacred theme speak of Him as eating and drinking and being born, they mean that the body, as a body, was born and sustained with the food proper to its nature; while God the Word, Who was united with it, was at the same time ordering the universe and revealing Himself through His bodily acts as not man only but God. Those acts are rightly said to be His acts, because the body which did them did indeed belong to Him and none other; moreover, it was right that they should be thus attributed to Him as Man, in order to show that His body was a real one and not merely an appearance. From such ordinary acts as being born and taking food, He was recognized as being actually present in the body; but by the extraordinary acts which He did through the body He proved Himself to be the Son of God. That is the meaning of His words to the unbelieving Jews: “If I do not the works of My Father, believe Me not; but if I do, even if ye believe not Me, believe My works, that ye may know that the Father is in Me and I in the Father.”  Invisible in Himself, He is known from the works of creation; so also, when His Godhead is veiled in human nature, His bodily acts still declare Him to be not man only, but the Power and Word of God. To speak authoritatively to evil spirits, for instance, and to drive them out, is not human but divine; and who could see-Him curing all the diseases to which mankind is prone, and still deem Him mere man and not also God? He cleansed lepers, He made the lame to walk, He opened the ears of the deaf and the eyes of the blind, there was no sickness or weakness that He did not drive away. Even the most casual observer can see that these were acts of God. The healing of the man born blind, for instance, who but the Father and Artificer of man, the Controller of his whole being, could thus have restored the faculty denied at birth? He Who did thus must surely be Himself the Lord of birth. This is proved also at the outset of His becoming Man. He formed His own body from the virgin; and that is no small proof of His Godhead, since He Who made that was the Maker of all else. And would not anyone infer from the fact of that body being begotten of a virgin only, without human father, that He Who appeared in it was also the Maker and Lord of all beside? Again, consider the miracle at Cana. Would not anyone who saw the substance of water transmuted into wine understand that He Who did it was the Lord and Maker of the water that He changed? It was for the same reason that He walked on the sea as on dry land–to prove to the onlookers that He had mastery over all. And the feeding of the multitude, when He made little into much, so that from five loaves five thousand mouths were filled–did not that prove Him none other than the very Lord Whose Mind is over all?
 1 Peter ii. 22
 John x. 37-38