Augustine of Hippo
Catena Aurea · Johannesevangelium 14
Let not your heart be troubled, neither let it be afraid. Ye have heard how I said unto you, I go away, and come again unto you. If ye loved me, ye would rejoice, because I said, I go unto the Father: for my Father is greater than I. And now I have told you before it come to pass, that, when it is come to pass, ye might believe. Hereafter I will not talk much with you: for the prince of this world cometh, and hath nothing in me. But that the world may know that I love the Father: and as the Father gave me commandment, even so I do. Arise, let us go hence.
(contr. Serm. Arrian. c. xi.) That the Son is obedient to the will and commandment of the Father, no more shews a difference in the two, than it would in a human father and son. But over and above this comes the consideration that Christ is not only God, and as such equal to the Father, but also man, and as such inferior to the Father.