ὁ Θεὸς μορφοῦται, ἤτοι οὐσιουται τὸ ἀλλότριον. Gregory of Nazianzum in his Carmen used the term οὐσιοῦσθαι of the word after the assumption of our nature. See also Dionys., De div. nom., ch. 2; Ep. ad Carmen, 4; &c.