[Christ, as a man, corresponds to the ego, and, as God, to the self, he is at once both ego and self, part and whole.]

Apart from the religious significance of the decision in favor of a complete union of both natures, I would mention in passing that the Monophysite dogma has a noteworthy psychological aspect:

it tells us (in psychological parlance) that since Christ, as a man, corresponds to the ego, and, as God, to the self, he is at once both ego and self, part and whole.

Empirically speaking, consciousness can never comprehend the whole, but it is probable that the whole is unconsciously present in the ego.

This would be equivalent to the highest possible state of completeness or perfection. ~Carl Jung; Aion; Paragraph 171