" By the authority of our Lord Jesus Christ, of the Blessed Apostles Peter and Paul, and by our own authority, we pronounce, declare, and define it to be a divinely revealed dogma: that the Immaculate Mother of God, the ever Virgin Mary, having completed the course of her earthly life, was assumed body and soul into heavenly glory.
Hence if anyone, which God forbid, should dare willfully to deny or to call into doubt that which we have defined, let him know that he has fallen away completely from the divine and Catholic Faith.
It is forbidden to any man to change this, our declaration, pronouncement, and definition or, by rash attempt, to oppose and counter it. If any man should presume to make such an attempt, let him know that he will incur the wrath of Almighty God and of the Blessed Apostles Peter and Paul. "
-Venerable Pius XII
November 1, 1950
Almighty and eternal God, who hast taken up into the glory of Heaven, with body and soul, the immaculate Virgin Mary, Mother of thy son: grant us, we pray, that we may always strive after heavenly things and thus merit to share in her glory. Amen.
O most sweet Lady and our Mother, by the merits of thy happy death obtain for us holy perseverance in the divine friendship, that we
may finally quit this life in God’s grace; and unite with the blessed spirits in praising thee and singing thy glories as thou deservest. Amen.
St. Alphonsus Ligouri (Glories of Mary)