Since then the properties of both natures and substances were preserved and co-existed in One Person, humility was embraced by majesty, weakness by strength, mortality by eternity; and to pay the debt of our condition the inviolable nature was united to a passible nature; so that, as was necessary for our healing, there was one and the same “Mediator between God and men, the man Jesus Christ,” who was capable of death in one nature and incapable of it in the other. In the complete and perfect nature, therefore, of very man, very God was born – complete in what belonged to Him, complete in what belonged to us.
-Leo of Rome (400-461)
according to Script 