St. Mechtilde of Hackeborn (1241-1299), a Benedictine nun of the convent of Helfta, experienced three visions of the Virgin Mary.
According to St. Gertrude (1256-1301), the Blessed Virgin Mary promised the following: "To any soul who faithfully prays the Three Hail Marys, I will appear at the hour of death in a splendor of beauty so extraordinary that it will fill the soul with heavenly consolation."