*Firstly, let me say that God predestines no one to Hell; God desires that all men be saved (1 Timothy 2:4); and He grants sufficient graces for salvation to all.
“Devotion of My Rosary is a great sign of predestination.” – Our Lady to St. Dominic
“… to love thee is a great sign of predestination and a grace which God does not grant except to those whom He will save.” – St. Alphonsus Liguori
“Devotion to Mary is a sure sign of predestination to him who possesses it.” – Bl. Alan de la Roche
“Mary is the Mysterious Book of Predestination to glory.” – St. Frances Xavier Cabrini
“I have no better way of knowing if a man is for God than if he likes to say the Hail Mary and the Rosary.” – St. Louis de Montfort
“If you persevere until death in true devotion to Mary, your salvation is certain.” – St. Alphonsus
“The sign of those who will be saved consists in this: that they have a great devotion to Mary in their hearts.” – St. John of Avila
“I believe that devotion to thee, O Lady, is a certain sign of eternal salvation.” – St. Gabriel of the Most Sorrowful Virgin
“Love of Mary and devotion to her are a sure sign of obtaining eternal salvation.” – St. Bernard
“O Mother of Perpetual Help, confidence in thee is a certain pledge of everlasting salvation.” – Bl. Pope Pius IX
“Just as in the natural and corporal generation of children there are a father and a mother, so in the supernatural and spiritual generation there are a Father, who is God, and a Mother, who is Mary. All the true children of God, the predestinate, have God for their Father and Mary for their Mother. He who has not Mary for his Mother has not God for his Father. This is the reason why the reprobate, such as heretics, schismatics and others , who hate our Blessed Lady or regard her with contempt and indifference, have not God for their Father, however much they boast of it, simply because they have not Mary for their Mother. For if they had her for their Mother, they would love and honour her as a true child naturally loves and honours the mother who has given him life.” – St. Louis de Montfort