Here is a few things i've found on rosary sites:
trictly speaking, there can be only one kind of Confraternity of the Rosary - one whose members agree to say the entire Rosary of one hundred and fifty Hail Marys every day. However, considering the fervor of those who say it, we may distinguish three kinds: Ordinary membership which entails saying the complete Rosary once a week; Perpetual membership which requires it be said only once a year; Daily membership which obliges one to say it all every day, that is, the fifteen decades made up one hundred and fifty Hail Marys.
-lessed Alan began this great work in 1460 after a special warning from Our Lord, Who wished to spur him on to preach the Holy Rosary, spoke to him in the Sacred Host: "How can you crucify Me again so soon?" Jesus said. "What did You say, Lord?", asked Blessed Alan, horrified. "You crucified Me once before by your sins," answered Jesus, "and I would willingly be crucified again rather than have My Father offended by the sins you used to commit. You are crucifying Me again now because you have all the learning and understanding that you need to preach My Mother's Rosary, and you are not doing so. If you only did this you could teach many souls that right path and lead them away from sin - but you are not doing it and so you yourself are guilty of the sins that they commit."
-On December 10, 1925, sister Lucy received an apparition by the Child Jesus and the Virgin Mary in her convent cell. The Holy Virgin shown her a Heart surrounded by thorns, Our Lady said to her:
"See, My daughter, My heart surrounded by thorns which ungrateful men pierce at every moment by their blasphemies and ingratitude... Say to all those who:
for five months, on the first Saturday, confess,
receive Holy Communion,
recite the Rosary
and keep Me company for 15 minutes while meditating on the fifteen mysteries of the Rosary, in a spirit of reparation,
I promise to assist them at the hour of death with all the graces necesary for the salvation of their souls."
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This is not biblical.