This twelfth book gives a notable interpretation of the words of the Lord to Mary, Touch Me not, for I am not yet ascended to My Father
But let us see what is the next addition that follows upon this profanity, an addition which is in fact the key of their defence of their doctrine. For those who would degrade the majesty of the glory of the Only-begotten to slavish and grovelling conceptions think that they find the strongest proof of their assertions in the words of the Lord to Mary, which He uttered after His resurrection, and before His ascension into heaven, saying, “Touch Me not, for I am not yet ascended to My Father: but go to My brethren and say unto them, I ascend unto My Father and your Father, and to My God and your God.”
The orthodox interpretation of these words, the sense in which we have been accustomed to believe that they were spoken to Mary, is I think manifest to all who have received the faith in truth. Still the discussion of this point shall be given by us in its proper place; but meantime it is worth while to inquire from those who allege against us such phrases as “ascending,” “being seen,” “being recognized by touch,” and moreover “being associated with men by brotherhood,” whether they consider them to be proper to the Divine or to the Human Nature.
For if they see in the Godhead the capacity of being seen and touched, of being supported by meat and drink, kinship and brotherhood with men, and all the attributes of corporeal nature, then let them predicate of the Only-begotten God both these and whatsoever else they will, as motive energy and local change, which are peculiar to things circumscribed by a body. But if He by Mary is discoursing with His brethren, and if the Only-begotten has no brethren, (for how, if He had brethren, could the property of being Only-begotten be preserved?) and if the same Person Who said, “God is a Spirit,” says to His disciples, “Handle Me,” that He may show that while the Human Nature is capable of being handled the Divinity is intangible, and if He Who says, “I go,” indicates local change, while He who contains all things, “in Whom,” as the Apostle says, “all things were created, and in Whom all things consist,” has nothing in existent things external to Himself to which removal could take place by any kind of motion, (for motion cannot otherwise be effected than by that which is removed leaving the place in which it is, and occupying another place instead, while that which extends through all, and is in all, and controls all, and is confined by no existent thing, has no place to which to pass, inasmuch as nothing is void of the Divine fullness,) how can these men abandon the belief that such expressions arise from that which is apparent, and apply them to that Nature which is Divine and which surpasses all understanding, when the Apostle has in his speech to the Athenians plainly forbidden us to imagine any such thing of God, inasmuch as the Divine power is not discoverable by touch, but by intelligent contemplation and faith? Or, again, whom does He Who did eat before the eyes of His disciples, and promised to go before them into Galilee and there be seen of them—whom does He reveal Him to be Who should so appear to them? God, Whom no man has seen or can see? Or the bodily image, that is, the form of a servant in which God was? If then what has been said plainly proves that the meaning of the phrases alleged refers to that which is visible, expressing shape, and capable of motion, akin to the nature of His disciples, and none of these properties is discernible in Him Who is invisible, incorporeal, intangible, and formless, how do they come to degrade the very Only-begotten God, Who was in the beginning, and is in the Father, to a level with Peter, Andrew, John, and the rest of the Apostles, by calling them the brethren and fellow-servants of the Only-begotten? And yet all their exertions are directed to this aim, to show that in majesty of nature there is as great a distance between the Father and the dignity, power, and essence of the Only-begotten, as there is between the Only-begotten and humanity. And they press this saying into the support of this meaning, treating the name of the God and Father as being of common significance in respect of the Lord and of His disciples, in the view that no difference in dignity of nature is conceived while He is recognized as God and Father both of Him and of them in a precisely similar manner.
Source: Against Eunomius (New Advent)