"A Christian who does not meditate on the mysteries of the Rosary is very ungrateful to our Lord and shows how little he cares for all that our Divine Savior has suffered to save the world. This attitude seems to show that he little or nothing of the life of Jesus Christ, and that he has never taken the trouble to find out about Him - what He did and what He went through in order to save us.
"A Christian of this kind ought to fear that having never known Jesus Christ or having put Him out of his mind and heart, He will disown him at the Day of Judgment and will hear reproachfully: 'Amen I say to you, I know you not.'
"Let us, then, meditate on the life and suffering of Our Lord by means of the Holy Rosary; let us learn to know Him well and to be grateful for all His blessings so that, at the Day of Judgment, He may number us among His children and His friends."
St. Louis de Montfort, The Secret of the Rosary, 23rd Rose.