56 Why do you distort the Incarnation into a blasphemy? Why pervert the mystery of salvation into a weapon of destruction? The Father, Who glorifies the Son, is greater: The Son, Who is glorified in the Father, is not less. How can He be less, when He is in the glory of God the Father? And how can the Father not be greater? The Father therefore is greater, because He is Father: but the Son, because He is Son, is not less. By the birth of the Son the Father is constituted greater: the nature that is His by birth, does not suffer the Son to be less. The Father is greater, for the Son prays Him to render glory to manhood He has assumed. The Son is not less, for He receives back His glory with the Father. Thus are consummated at once the mystery of the Birth, and the dispensation of the Incarnation. The Father, as Father, and as glorifying Him Who now is Son of Man, is greater: Father and Son are one, in that the Son, born of the Father, after assuming an earthly body is taken back to the glory of the Father.
Source: On the Trinity (New Advent)