J.M.J. "8. Every day, from one end of the earth to the other, in the highest heaven and in the lowest abyss, all things preach, all things proclaim the wondrous Virgin Mary. The nine choirs of angels, men and women of every age, rank and religion, both good and evil, even the very devils themselves are compelled by the force of truth, willingly or unwillingly, to call her blessed.
"According to St. Bonaventure, all the angels in heaven unceasingly call out to her: 'Holy, holy, holy Mary, Virgin Mother of God.' They greet her countless times each day with the angelic greeting, 'Hail, Mary', while prostrating themselves before her, begging her as a favor to honor them with one of her requests. According to St. Augustine, even St. Michael, though prince of all the heavenly court, is the most eager of all the angels to honor her and lead others to honor her. At all times he awaits the privilege of going at her word to the aid of one of her servants."
--Saint Louis Marie Grignion de Montfort, Treatise on True Devotion to the Blessed Virgin, 8.