Feast of the Assumption of Mary into Heaven

In the Preface for the Liturgy for the Feast of the Assumption we read: "For today the Virgin Mother of God was assumed into heaven as the beginning and image of your Church's coming to perfection and a sign of sure hope and comfort to your pilgrim people; rightly you would not allow her to see the corruption of the tomb since from her own body she marvelously brought forth your incarnate Son, the Author of all life."

One of my theology professors told us to always go to the Preface of the Feast to understand the theology of it. I just know that August 15 was a feast of Our Lady from the fifth century as it celebrated the fact that she is the Mother of God. The Magnificat Mass booklet has a selection on the Graces of the Assumption by Hans Urs von Balthaser who was a great Swiss Catholic theologian. He says that "when Mary comes to God on the day of her Assumption, she simply returns home to the place that was hers from the start, a place so familiar to her (for it is the revelation of her real being) that she instantly knows "this is where I have always been." And then he reminds us that we are children of the Father, members of Christ and have the Holy Spirit so that our home is also the place where we originated.