It was fitting that Mary be preserved from sin so she could conquer the devil
2 min • Digitized on February 8, 2022
From The Glories of Mary, page 340
By St. Alphonsus Liguori
Besides, it was fitting that God should preserve her from original sin, since he destined her to bruise the head of the infernal serpent, who, by seducing our first parents, brought death upon all men, as our Lord predicted: “I will put enmities between thee and the woman, and thy seed and her seed; she shall crush thy head.” [Gen. iii. 15.]
Now, if Mary was to be the strong woman brought into the world to crush Lucifer, surely it was not fitting that she should first be conquered by Lucifer, and made his slave, but rather that she should be free from every stain, and from all subjection to the enemy.
As he had in his pride already corrupted the whole human race, he would also corrupt the pure soul of this Virgin. But may the divine goodness be ever praised, who prevented her with so much grace, to the end that remaining free from every stain of sin, she could overthrow and confound his pride, as St. Augustine says, or whoever may have been the author of that commentary upon Genesis: As the devil was the head from whence original sin proceeded, that head Mary crushed, because no sin ever entered the soul of the Virgin, and therefore she was free from all stain.
St. Bonaventure still more clearly expresses the same: It was meet that the blessed Virgin Mary, by whom our shame was to be removed, should conquer the devil, and there she should not yield to him in the least degree. *