An excerpt from The Secret of the Rosary
A Danish priest used to love to tell how the very same improvement that the Spanish Bishop noticed in his diocese had occurred in his own parish. He always told his story with great rejoicing of soul because it gave such glory to Almighty God. He said:
“I had preached as compellingly as I could, touching on many aspects of our Holy Faith, and using every argument I could possibly think of to get the people to amend their way of life. But in spite of all my efforts they went unconcernedly about their way as before; and it was then that I decided to preach the Holy Rosary.
“I told my congregations how precious it is and I taught them how to say it. I kept on preaching the Holy Rosary and the devotion took root in the parish. Six months later I was overjoyed to see that people had really changed for the better. How true it is that this God-given prayer has divine power — the power to touch our hearts and to fill them with horror of sin and the love of virtue!”
One day Our Lady said to Blessed Alan: “Just as Almighty God chose the Angelic Salutation to bring about the Incarnation of His Word and the Redemption of mankind, in the same way those who want to bring about moral reforms and who want people reborn in Jesus Christ must honor Me and greet Me with the same salutation. I am the channel by which God came to men, and so, next to My Son Jesus Christ, it is through Me that men must obtain grace and virtue.”
I, who write this, have learned from my own experience that the Rosary has the power to convert even the most hardened hearts. I have known people who have gone to missions and who have heard sermons on the most terrifying subjects without being in the least moved; and yet, after they had, on my advice, started to say the Rosary every day they eventually became converted and gave themselves completely to God.
When I have gone back again to visit parishes where I have given missions I have seen a tremendous difference in them; in those parishes where people had given up the Rosary they had generally fallen back into their sinful ways again, whereas in places where the Rosary was said faithfully I found the people were persevering in the grace of God and were advancing each day in virtue.