"Signum magnum appáruit in cœlo... A great sign appeared in Heaven..."
Although St. Louis Marie de Montfort, our spiritual father, writes little directly about the Assumption of our Lady into Heaven, his Mariology assumes her sharing in her Son's victory over death and in His glory. In his introduction to his Treatise on True Devotion, St. Louis sketches for us Mary's hidden life and her powerful role in our redemption:
"In answer to her prayers to remain hidden, poor and lowly, God was pleased to conceal her from nearly every other human creature in her conception, her birth, her life, her mysteries, her resurrection and assumption. Her own parents did not really know her; and the angels would often ask one another, "Who can she possibly be?", for God had hidden her from them, or if he did reveal anything to them, it was nothing compared with what he withheld.
"Mary is the supreme masterpiece of Almighty God and he has reserved the knowledge and possession of her for himself. She is the glorious Mother of God the Son who chose to humble and conceal her during her lifetime in order to foster her humility. He called her "Woman" as if she were a stranger, although in his heart he esteemed and loved her above all men and angels. Mary is the sealed fountain and the faithful spouse of the Holy Spirit where only he may enter. She is the sanctuary and resting-place of the Blessed Trinity where God dwells in greater and more divine splendour than anywhere else in the universe, not excluding his dwelling above the cherubim and seraphim."