WHOEVER PERSEVERES IN THE DAILY PRAYER OF THE HOLY ROSARY WILL NOT BE CONDEMNED, THE DEVILS THEMSELVES HAVE CONFESSED IT

-THE DEVIL WILL PRESENT YOU WITH MANY OBSTACLES SO YOU DO NOT PRAY IT 

 Then, forced by God, the demons said to Saint Dominic: 

“… This Mother of Christ is omnipotent, and can prevent her servants from falling into hell. She, like a sun, dissipates the darkness of our cunning machinations. Discovers our intrigues, breaks our nets and reduces all uselessness our temptations WE ARE FORCED to confess that no one who perseveres in his service condemns with us. 

“A single sigh that she presents to the Holy Trinity is worth more than all the prayers, vows and desires of all the saints We fear her more than all the blessed together and we can do nothing against her faithful servants. 

"Also keep in mind that many Christians who invoke her at death and who should be condemned according to ordinary laws, are saved thanks to her intercession. We have to add, with greater clarity and precision - BOUND by the violence they cause us - that no one who perseveres in the prayer of the Rosary will be condemned. Because she obtains for her faithful devotees the true contrition of sins, so that they may confess them and achieve their forgiveness.” 

 Saint Louis Marie Grignion de Montfort, The Secret of the Rosary