The truth about Assumption of Mary is the dogma of our faith, which was proclaimed not too far ago by – at the time, Pope Pius XII on November 1, 1950 in the Apostolic Constitution Munificentissimus Deus: “…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.” (Breviarium Fidei VI, 105).
“Blessed are you, Mary, assumed body and soul into heaven! Pius XII defined this truth “for the glory of almighty God …, for the honor of his Son, the immortal King of the ages and the Victor over sin and death, for the greater glory of his Mother and for the joy and exultation of the entire Church” (Ap. Const. Munificentissimus Deus, AAS 42 , 770).
And we exult, O Mary Assumed into Heaven, as we contemplate you who have been glorified and, in the risen Christ, have become the co-worker of the Holy Spirit in communicating divine life to mankind. In you we see the goal of holiness to which God calls all the Church’s members. In your life we recognize the clear sign of the path to spiritual maturity and Christian holiness.
With you and with all the saints we glorify God the Trinity, who sustains our earthly pilgrimage and lives and reigns for ever and ever. Amen.” Solemnity of all Saints John Paul II November 1, 2000