in St. Mary Major's Basilica
When the doctrine of the Theotokos, which stated that Mary was the mother of God, literally God-bearer, Pope Sixtus built a church in her honour. This church is now called the Basilica of St Mary Major. It is one of the most beautiful churches in Rome and is the oldest church dedicated to Mary in the West.
The Responsorial Psalm for the feast is from the book of Judith. In this prophesy Mary is called "blessed beyond all women on earth," and is praised for the trust she shows the Lord. Judith also refers to her as having the "highest honour of our race."
The gospel acclamation sums Mary up perfectly, "Happy are those who hear the word of God and keep it." Mary certainly did this and is an example to us all.
Tomorrow, the 6th, is the feast of the Transfiguration, where Jesus shows his apostles his glory. It is fitting that today's feast in memory of Mary being proclaimed Theotokos should precede the Transfiguration. Tomorrow Jesus reveals who Mary faithfully carried within her womb!