That was what the Lord said to the devil who was poorly disguised as serpent. But who's this woman that would definitely crush the serpent's head?
I have long learned from the teachings of the Catholic Church that the woman is the Blessed Virgin Mary. That was what I simply know and understand for a long time, until I read St. Louis Marie de Montfort's book "True Devotion to the Blessed Virgin". I never knew that that particular bible passage was an introduction to Mary's role in God's plan.
The following are excerpts from the book "True Devotion to the Blessed Virgin" by St. Louis Marie de Montfort which remarkably expounded the meaning of Genesis 3:15.
"God has established only one enmity - but it is an irreconcilable one - which will last and even go on increasing to the end of time. That enmity is between Mary, his worthy Mother, and the devil, between the children and the servants of the Blessed Virgin and the children and followers of Lucifer.
Thus the most fearful enemy that God has set up against the devil is Mary, his holy Mother. From the time of the earthly paradise, although she existed then only in his mind, he gave her such a hatred for his accursed enemy, such ingenuity in exposing the wickedness of the ancient serpent and such power to defeat, overthrow and crush this proud rebel, that Satan fears her not only more than angels and men but in a certain sense more than God himself. This does not mean that the anger, hatred and power of God are not infinitely greater than the Blessed Virgin's since her attributes are limited. It simply means that Satan, being so proud, suffers infinitely more in being vanquished and punished by a lowly and humble servant of God, for her humility humiliates him more than the power of God.
What Lucifer lost by pride Mary won by humility. What Eve ruined and lost by disobedience Mary saved by obedience. By obeying the serpent, Eve ruined her children as well as herself and delivered them up to him. Mary, by her perfect fidelity to God, saved her children with herself and consecrated them to his divine majesty."
That's why the ancient serpent is trying his best to discredit Mary at all costs. From that day in paradise until now, Satan is continually trying to destroy any real knowledge of the Blessed Virgin. But in spite of all these, Mary is still here, strong as ever, and still giving infinite glory to God.
Holy Mary, pray for us!