In 1578, a woman of Antwerp had given herself to the devil and signed a contract with her own blood. Shortly afterwards she was stricken with remorse and had an intense desire to make amends for this terrible deed. So she sought out a kind and wise confessor to find out how she could be set free from the power of the devil.
She found a wise and holy priest, who advised her to go to Father Henry, director of the Confraternity of the Holy Rosary, at the Dominican Friary, to be enrolled there and to make her confession. Accordingly, she asked to see him but met, not Father Henry, but the devil disguised as a friar. He reproved her severely and said she could never hope to receive God's grace, and there was no way of revoking what she had signed. This grieved her greatly but she did not lose hope in God's mercy and sought out Father Henry once more, only to find the devil a second time, and to meet with a second rebuff. She came back a third time and then at last, by divine providence, she found Father Henry in person, the priest whom she had been looking for, and he treated her with great kindness, urging her to throw herself on the mercy of God and to make a good confession. He then received her into the Confraternity and told her to say the Rosary frequently.
One day, while Father Henry was celebrating Mass for her, our Lady forced the devil to give her back the contract she had signed. In this way she was delivered from the devil by the authority of Mary and by devotion to the holy Rosary.
- from The Secret of the Rosary, bySaint Louis-Marie Grignion de Montfort