God Announces His Plan to the Angels - The Conception - Bk 1 - Ch 7

After God created the angels, they were shown the Divine plan for the creation of the world and the human race whose apex would be the Incarnation of the Word (Jesus Christ) via the Blessed Virgin Mary. This brought on the fall of the angels that did not love God. Out of wild pride, jealousy, and arrogance Satan threatened God’s plan and told Him that he would destroy the mortals and especially this Virgin he loved so much. He would fail in his boasting. God Himself warned Satan, "This Woman, whom you refuse to honour, shall crush thy head and by Her shalt thou be vanquished and annihilated (Genesis 3:15). And if through thy pride, death enters into the world (Wisdom 2:24), life and salvation of mortals shall enter through the humility of this Woman. Those that are of the nature and likeness of that Man and Woman, shall enjoy the gifts and the crowns, which thou and thy followers have lost."