Catena Aurea on John 5:14–18: Augustine of Hippo

i. e. not in the secondary sense in which it is true of all of us, but as implying equality. For we all of us say to God, Our Father, Which art in heaven. (Matt. 6) And the Jews say, Thou art our Father. (Isaiah 63:16) They were not angry then because He called God His Father, but because He called Him so in a sense different from men.