Friday was the Feast of the Patronage of the Blessed Virgin Mary over the entire Order of Preachers, according to the Dominican Liturgical calendar.
From the Commentary on the Constitutions of the Order of Preachers by Bl. Humbert of Romans, who was the fifth master of the Order:
From the events surrounding the beginning of our Order many reasons can be adduced why the Blessed Virgin Mary herself may be considered the special patroness of our Order. From what I have heard with my own ears and from the many accounts in the 'Lives of the Brethren', it seems that she is our special Mother, bringing forth, advancing and defending the Order whose purpose is to praise, to bless and to preach her Son.From the Miracles of St. Dominic as narrated by Sr. Cecilia:
Suddenly [Dominic] was caught up in spirit before God and saw the Lord and the Blessed Virgin sitting at his right. It seemed to Blessed Dominic that Our Lady was wearing a cloak the color of sapphire.It has often been said that Dominic had the gift of tears. Holy Mary, Mother of God, pray for us sinners.
As Blessed Dominic looked around, he could see religious of all the orders but his own before the throne of God. He began to weep bitterly and stood apart, not daring to approach the Lord and his Mother. Then Our Lady motioned for him to come near. But he would not dare, until the Lord himself also called him.
Blessed Dominic cast himself down before them weeping bitterly. The Lord told him to rise, and when he did, asked him, "Why are you weeping so?" "I am weeping because I see all the other orders here but no sign of my own." The Lord said to him, "Do you want to see your Order?" and he answered, "Yes, Lord." Then the Blessed Virgin opened the cloak she was wearing and spread it out before Blessed Dominic, to whom it seemed cast enough to cover the entire heaven, and under it he saw a large multitude of the brethren.
Then prostrating himself, Blessed Dominic gave thanks to God and to Blessed Mary his Mother.