Despite Venerable Pope Pius XII's courageous behind-the-scenes actions during World War II to free those imprisoned in the Nazi concentration camps, some scholars believe that Pope Pius XII's most significant contribution was his consecration of the entire world to the Immaculate Heart of Mary, on October 31, 1942, the twenty-fifth anniversary of the apparitions of Our Lady of Fatima. Why would such an action be considered so important? What is the...