John Chrysostom
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.
(Hom. xxxviii. 4) Or thus; That the Son can do nothing of Himself, must be understood to mean, that He can do nothing contrary to, or displeasing to, the Father. And therefore He does not say that He does nothing contrary, but that He can do nothing; in order to shew His perfect likeness, and absolute equality to the Father. Nor is this a sign of weakness in the Son, but rather of goodness. For as when we say that it is impossible for God to sin, we do not charge Him with weakness, but bear witness to a certain ineffable goodness; so when the Son says, I can do nothing of myself, it only means, that He can do nothing contrary to the Father.