Hilary of Poitiers

(vii. de Trin. c. 24) Before proving that He and His Father are one, He answers the absurd and foolish charge brought against Him, that He being man made Himself God. When the Law applied this title to holy men, and the indelible word of God sanctioned this use of the incommunicable name, it could not be a crime in Him, even though He were man, to make Himself God. The Law called those who were mere men, gods; and if any man could bear the name religiously, and without arrogance, surely that man could, who was sanctified by the Father, in a sense in which none else is sanctified to the Sonship; as the blessed Paul saith, Declared1 to be the Son of God with power, according to the Spirit of holiness. (Rom. 1:4) For all this reply refers to Himself as man; the Son of God being also the Son of man.