John Murray, On the Nature of the Incarnation

“It is sometimes thought that, when the Son of God became man and humbled himself, he thereby ceased to be what he was and in some way divested himself of the attributes and prerogatives of deity, that he changed the form of God for the form of man. He became poor, it is said, by emptying himself of divine properties, became poor by subtraction, by divestiture, by depotentiation. The Scripture does not support any such notion…Even in his incarnate state, in him dwelt all the fullness of Godhood (Col. 2:9). When the Son of man became poor, it was not by giving up his Godhood nor any of the attributes and prerogatives inseparable from Godhood. When he became man, he did not cease to be rich in his divine being, relations, and possession. He did not become poor by ceasing to be what he was, but he became poor by becoming what he was not. He became poor by addition, not by subtraction.”