Five Tomes Against Nestorius

Since therefore he says that the body has been ineffably united to God, and that which is truly ineffable is beyond understanding and speech, true of a surety is the union or the (according to him) connection. For such things are ineffable, and of things that thus come together with one another one would not (I deem) know the mode. But if thou art able to say it, and deemest that thou canst declare the force of the connection, how is it any longer ineffable?

But I marvel that albeit he says that the Body has been connected with God and that ineffably, he does not say that it is His very own, in order that it might be conceived of as one with Him, but parts again into man and God, separately and apart, the One Christ and Lord Jesus, and feigns that he thinks aright, when he says,

"Yet not mere man is Christ (o accuser) but Man alike and God: had He been God alone, it had been right, of Apolinarius, to say, Why seek ye to kill Me, God, Who have told you the truth? This is He Who was encircled with the Thorny Crown, this He Who said, My God, My God, why forsookest Thou Me? this He Who endured the three days death, this do I worship with the Godhead as co-partner in the Divine sway."