St. Louis de Montfort was the author of a beautiful book: The Secret of the Rosary. In it, he expounds upon (among other things) the reasons for the Rosary to be divided into sections as it is. I thought these were beautiful enough to share:
Ever since Saint Dominic established the devotion to the Holy Rosary up until the time when Blessed Alan de la Roche re-established it in 1460 it has always been called the Psalter of Jesus and Mary. This is because it has the same number of Angelic Salutations as there are psalms in the Book of the Psalms of David…
Our Lady’s Psalter or Rosary is divided up into three parts of five decades each, for the following special reasons:
- To honor the three Persons of the Most Blessed Trinity;
- To honor the life, death and glory of Jesus Christ;
- To imitate the Church Triumphant, to help the member of the Church Militant and to lessen the pains of the Church Suffering;
- To imitate the three groups into which the Psalms are divided:
- the first being for the purgative life,
- the second for the illuminative life,
- and the third for the unitive life;
- And, finally, to give us graces in abundance during our lifetime, peace at death, and glory in eternity.
He makes it clear that the connection between the 150 Davidic Psalms, and the 150 angelic salutations is extremely important to the Rosary and is why it is referred to as the Psalter of Jesus and Mary.
This seemed to be a good follow up quotation from my previous post on the origin of the Rosary
God Bless
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