In a book written by Frank Duff and used by the Legion of Mary there are some statements made concerning Mary and grace. One such statement is " The Father has not given and does not give his Son except by her. He has no children but by her, and communicates no graces but by her." Also, " The Holy Spirit has not formed Jesus Christ except by her, neither does he form the members of our Lord’s Mystical Body except by her; and through her alone does he dispense his favours and his gifts."
This is an excerpt in the book from a Treatise on True Devotion by St. Louis-Marie de Montfort
What is it’s meaning?