33 And so— for not even the glory of the Resurrection has opened the eyes of these lost men and kept them within the manifest bounds of the faith— they have forged a weapon for their blasphemy out of a pretended reverence, and even perverted the revelation of a mystery into an insult to God. From the words, I ascend unto My Father and your Father, to My God and your God, they argue that since that Father is ours as much as His, and that God also ours and His, His own confession that He shares with us in that relation to the Father and to God excludes Him from true Divinity, and subordinates Him to God the Creator Whose creature and inferior He is, as we are, although He has received the adoption of a Son.
Nay more, we must not suppose that He possesses any of the characters of the Divine nature, since the Apostle says, But when He says, all things are put in subjection, this is except Him Who did subject all things unto Him, for when all things shall have been subjected unto Him, then shall also He Himself be subjected to Him that did subject all things unto Him, that God may be all in all. For, so they say, subjection is evidence of want of power in the subject and of its possession by the sovereign.
The eleventh book is employed in a reverent discussion of this argument; it proves from these very words of the Apostle not only that subjection is no evidence of want of power in Christ but that it actually is a sign of His true Divinity as God the Son; that the fact that His Father and God is also our Father and God is an infinite advantage to us and no degradation to Him, since He Who has been born as Man and suffered all the afflictions of our flesh has gone up on high to our God and Father, to receive His glory as Man our Representative.
Source: On the Trinity (New Advent)