Back of card: The Hail Mary, Our Lady's Favorite Prayer. The Blessed Virgin herself assured St. Gertrude that this prayer was dearest to her, and that she would assist the saint in death as often as she had said the Hail Mary. The Blessed Jane of France earnestly begged our blessed Lady to make known to her what prayer was most pleasing to her. Mary revealed to her than no prayer was more agreeable to her than the Hail Mary.