The three councils preceding Chalcedon dealt with various heresies regarding theologies surrounding the nature of Jesus ...

This decision was further explained by the Council of Chalcedon (451) which says with regard to Mary's divine motherhood: "...begotten from the Father before the ages as regards his godhead ...

While some further division existed with the Eastern churches over the terminology, previous councils, particularly the Council of Chalcedon, had resulted in greater divisions that had not yet healed.