Augustine of Hippo
Catena Aurea · Johannesevangelium 5
Afterward Jesus findeth him in the temple, and said unto him, Behold, thou art made whole: sin no more, lest a worse thing come unto thee. The man departed, and told the Jews that it was Jesus, which had made him whole. And therefore did the Jews persecute Jesus, and sought to slay him, because he had done these things on the sabbath day. But Jesus answered them, My Father worketh hitherto, and I work. Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God. And (He) said unto him, Behold, thou art made whole; sin no more, lest a worse thing come upon thee.
(Tr. xvii. s. 16) The Jews however did not understand from our Lord that He was the Son of God, but only that He was equal with God; though Christ gave this as the result of His being the Son of God. It is from not seeing this, while they saw at the same time that equality was asserted, that they charged Him with making Himself equal with God: the truth being, that He did not make Himself equal, but the Father had begotten Him equal.