The Third Anathema: A Natural Union

If anyone, after the hypostatic union, divides the hypostases in the one Christ, joining them only by a connection of worth, or even of authority and power, and not rather by a coming together made by a natural union: let him be anathema. [a]

Nestorius’s third counter-anathema: [b] If anyone says that Christ, who is also Emmanuel, is one not merely by connection but also by nature, and does not acknowledge the connection of the two natures, that of the Word and that of the manhood he took on, in one Son, as still continuing without mingling: let him be anathema. [c]