(From Saint of the Day, American Catholic.org)
On November 1, 1950, Pope Pius XII defined the Assumption of Mary to be a dogma of faith: “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 to heavenly glory.”
“In the bodily and spiritual glory which she possesses in heaven, the Mother of Jesus continues in this present world as the image and first flowering of the Church as she is to be perfected in the world to come. Likewise, Mary shines forth on earth, until the day of the Lord shall come (cf. 2 Peter 3:10), as a sign of certain hope and com fort for the pilgrim People of God” (Dogmatic Constitution on the Church, 68).