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— Pope Bl. Pius IX solemnly defined the traditional belief of the Church: the Blessed Virgin Mary was conceived free from all stain of Original Sin. Her Immaculate Conception is the most beautiful fruit of the work of redemption accomplished by her Son, Jesus Christ. Chosen to be the Mother of the Savior, the Blessed Virgin Mary is a model of holiness for all Christians. (Proper of Saints, Daily Roman Missal)