"Some years ago, as all will remember, while the late war was still in its fury, when human means showed themselves to be uncertain and inadequate to that terrible conflagration, We addressed our fervent prayers to the all merciful Redeemer, invoking the powerful patronage of the Immaculate Heart of Mary.
And even as our predecessor of immortal memory, Leo XIII, at the dawn of the twentieth century saw fit to consecrate the whole human race to the Most Sacred Heart of Jesus, so We have likewise, in the guise of representative of the whole human family which He redeemed, desired to dedicate it in turn to the Immaculate Heart of the Virgin Mary.
It is our wish, consequently, that wherever the opportunity suggests itself, this consecration be made in the various dioceses as well as in each of the parishes and families. And We are confident that abundant blessings and favors from Heaven will surge forth from this private and public consecration"
-Ven. Pius XII