6 How think otherwise? Could not God have given us, in another way than through the Virgin the Redeemer of the human race and the Founder of the Faith? But, since Divine Providence has been pleased that we should have the Man-God through Mary, who conceived Him by the Holy Ghost and bore Him in her breast, it only remains for us to receive Christ from the hands of Mary. Hence whenever the Scriptures speak prophetically of the grace which was to appear among us, the Redeemer of mankind is almost invariably presented to us as united with His mother. The Lamb that is to rule the world will be sent - but He will be sent from the rock of the desert; the flower will blossom, but it will blossom from the root of Jesse. Adam, the father of mankind, looked to Mary crushing the serpent's head, and he dried the tears that the malediction had brought into his eyes. Noë thought of her when shut up in the ark of safety, and Abraham when prevented from the slaying of his son; Jacob at the sight of the ladder on which angels ascended and descended; Moses amazed at the sight of the bush which burned but was not consumed; David escorting the arc of God with dancing and psalmody; Elias as he looked at the little cloud that rose out of the sea. In fine, after Christ, we find in Mary the end of the law and the fulfillment of the figures and oracles.
Source: Ad Diem Illum Laetissimum (Vatican.va)