From my reading this morning, Gregory of Nazianzus:

God became human and poor for our sake, to raise up our flesh, to recover our divine image, to recreate humanity. We no longer observe distinctions arriving from the flesh, but are to bear within ourselves only the seal of God, by whom and for whom we were created. We are to be so formed and molded by Jesus that we are recognized as belonging to his one family. If only we could be what we hope to be, by the great kindness of our generous God!