You will understand why the devil works against those who promote the Scapular when you hear the story of Venerable Francis Ypes. One day his Scapular fell off. As he replaced it, the devil howled, “
Take off the habit which snatches so many souls from us!” Then and there Francis made the devil admit that there are three things which the demons are most afraid of:
the Holy Name of Jesus, the Holy Name of Mary, and the Holy Scapular of Carmel . To that list we could add: the Holy Rosary.
The great St. Peter Claver was another of God‟s heroes who used the Scapular to good advantage. Every month a shipment of 1000 slaves would arrive at Cartegena, Colombia, South America. St. Peter used to insure the salvation of his converts. First, he organized catechists to give them instructions. Then, he saw to it that they were baptized and clothed with the Scapular. Some ecclesiastics accused the Saint of indiscreet zeal, but St. Peter was confident that Mary would watch over each of his more than 300,000 converts! (
Garment of Grace, emphasis added )