15. Devotion to my Rosary is a great sign of predestination.
Predestination in this context means that, by the sign which is present to a person from the action of devoutly praying the Rosary, God has pre-ordained your salvation. Absolute certainty of salvation can only be truly known if God reveals it to a person because, although we are given sufficient Grace during life, our salvation depends upon our response to said Grace. (See Summa Theologica, Question 23 for a detailed theological explanation). Said another way, if God has guaranteed a person’s salvation but has not revealed it to Him, God would want that person to pray the Rosary because of all the benefits and Graces obtained.
Therefore the person gets a hint by devotion to the Rosary. This is not to say that praying the Rosary guarantees salvation – by no means. In looking at promises #3 and #4 above, praying the Rosary helps one to live a holy life, which is itself a great sign that a soul is on the road to salvation. (See also paragraphs 381, 488, 600, 2782 in the Catechism of the Catholic Church.) In fact, St. Louis de Montfort says even more strongly that “an infallible and unmistakable sign by which we can distinguish a heretic, a man of false doctrine, an enemy of God, from one of God’s true friends is that the hardened sinner and heretic show nothing but contempt and indifference to Our Lady…” [True Devotion to Mary, #30]
Listers, OLW shares the following prudent piece of advice in conclusion to the 15 promises:
Reminder: these promises mean that, by faithfully and devoutly praying the Rosary, Our Lady will obtain for us the necessary Graces to obtain said promises. It is still up to each individual soul to respond to those Graces in order to obtain salvation.
