DS 10–30; 42/64; 72; 150) and Mother; indeed, she may be called “Mother of God” (θεοτόκος: DS 251, Council of Ephesus). Both are closely related: when she is called Mother of God, this title primarily expresses the unity of divinity and humanity in Christ, which is so intimate that one cannot, for the sake of the corporeal events such as birth, construct a merely human Christ, cut off from the entirety of his person. That was the argument of the Nestorians who would only permit the designation “Mother