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Redemptoris Mater (Latin: Mother of the Redeemer) is an encyclical by Pope John Paul II delivered on March 25, 1987 in Saint Peter's Basilica in Rome. Subtitled On the Blessed Virgin Mary in the life of the Pilgrim Church, the text addresses a number of topics in Mariology.
Catholic tradition and Mariology include specific prayers and devotions as acts of reparation for insults and blasphemies against Mary, mother of Jesus, often known as the Blessed Virgin Mary to Catholics. Similar prayers as Acts of Reparation to Jesus Christ and Acts of Reparation to The Holy Trinity also exist.
Some such prayers are provided in the Raccolta Catholic prayer book, first published in association with the Catholic Congregation for Indulgences in 1807.