Blessed Alan relates that a man he knew had tried desperately all kinds of devotions to rid himself of the evil spirit which possessed him, but without success. Finally, he thought of wearing his rosary round his neck, which eased him considerably. He discovered that whenever he took it off the devil tormented him cruelly, so he resolved to wear it night and day. This drove the evil spirit away forever because he could not bear such a terrible chain. Blessed Alan also testifies that he delivered a great number of those who were possessed by putting a rosary around their necks.
Father Jean Amat, of the Order of St. Dominic, was giving a series of Lenten sermons in the Kingdom of Aragon one year, when a young girl was brought to him who was possessed by the devil. After he had exorcised her several times without success, he put his rosary round her neck. Hardly had he done so when the girl began to scream and cry out in a fearful way, shrieking, "Take it off, take it off; these beads are tormenting me." At last, the priest, filled with pity for the girl, took his rosary off her.
The very next night, when Fr. Amat was in bed, the same devils who had possession of the girl came to him, foaming with rage and tried to seize him. But he had his rosary clasped in his hand and no efforts of theirs could wrench it from him. He beat them with it very well indeed and put them to flight, crying out, "Holy Mary, Our Lady of the Rosary, come to my help."
The next day on his way to the church, he met the poor girl, still possessed; one of the devils within her started to jeer at him, saying, "Well, brother, if you had been without your rosary, we should have made short shrift of you." Then the good Father threw his rosary round the girl's neck without more ado, saying, "By the sacred names of Jesus and Mary his holy Mother, and by the power of the holy Rosary, I command you, evil spirits, to leave the body of this girl at once." They were immediately forced to obey him, and she was delivered from them.