4 Thence the Rosary takes us on to the Glorious Mysteries, wherein likewise is revealed the mediation of the great Virgin, still more abundant in fruitfulness. She rejoices in heart over the glory of her Son triumphant over death, and follows Him with a mother's love in His Ascension to His eternal kingdom; but, though worthy of Heaven, she abides a while on earth, so that the infant Church may be directed and comforted by her "who penetrated, beyond all belief, into the deep secrets of Divine wisdom" (St. Bernard). Nevertheless, for the fulfilment of the task of human redemption there remains still the coming of the Holy Ghost, promised by Christ. And behold, Mary is in the room, and there, praying with the Apostles and entreating for them with sobs and tears, she hastens for the Church the coming of the Spirit, the Comforter, the supreme gift of Christ, the treasure that will never fail. And later, without measure and without end will she be able to plead our cause, passing upon a day to the life immortal. Therefore we behold her taken up from this valley of tears into the heavenly Jerusalem, amid choirs of Angels. And we honour her, glorified above all the Saints, crowned with stars by her Divine Son and seated at His side the sovereign Queen of the universe.
Source: Iucunda Semper Expectatione (Vatican.va)