The divine plan for the world’s salvation included the existence of a Mother of God: and as heresy sought to deny the mystery of the Incarnation, it equally sought to deny the glorious prerogative of Mary. Nestorius asserted that Jesus was only man; Mary consequently was not Mother of God, but merely Mother of a Man called Jesus. This impious doctrine roused the indignation of the Catholic world. The East and West united in proclaiming that Jesus was God and Man, in unity of Person; and that Mary, being his Mother, was, in strict truth, Mother of God.’
This victory over Nestorianism was won at the Council of Ephesus. It was hailed by the Christians of those times with an enthusiasm of faith which not only proved the tender love they had for the Mother of Jesus, but was sure to result in the setting up of some solemn trophy that would perpetuate the memory of the victory. It was then that the pious custom began, in both the Greek and Latin Churches, of uniting during Christmas the veneration due to the Mother with the supreme worship given to the Son. The day assigned for the united commemoration varied in the several countries, but the sentiment of religion which suggested the Feast was one and the same throughout the entire Church.
The holy Pope Sixtus III ordered an immense mosaic to be worked into the chancel-arch of the Church of St Mary Major, in Rome, as a monument to the holy Mother of God. The mosaic still exists, bearing testimony as to what was the faith held in the fifth century. It represents the various scriptural types of our Lady, and the inscription of the holy Pontiff is still legible in its bold letters: XYSTUS EPISCOPUS PLEBI DEI (Sixtus Bishop to the people of God): for the Saint had dedicated to the faithful this his offering to Mary, the Mother of God.
Dom Prosper Guéranger
L'année liturgique
January 1st (Circumcision of the Lord)
