Augustine of Hippo
Catena Aurea · Johannesevangelium 5
Then answered Jesus and said unto them, Verily, verily, I say unto you, The Son can do nothing of himself, but what he seeth the Father do: for what things soever he doeth, these also doeth the Son likewise. For the Father loveth the Son, and sheweth him all things that himself doeth: and he will shew him greater works than these, that ye may marvel.
(Tr. xx. 4) As if He said: Why are ye offended that I called God My Father, and that I make Myself equal with God? I am equal, but equal in such a sense as is consistent with His having begotten Me; with My being from Him, not Him from Me. With the Son, being and power are one and the same thing. The Substance of the Son then being of the Father, the power of the Son is of the Father also: and as the Son is not of Himself, so He can not of Himself. The Son can do nothing of Himself, but what He seeth the Father do.— (xxi. 4). His seeing and His being born of the Father are the same. His vision is not distinct from His Substance, but the whole together is of the Father.