Ad Diem Illum
The encyclical Ad diem illum laetissimum was published on 2 February 1904 by Pope Pius X, they confirmed the "mystery and meaning of the Immaculate Conception of Mary " on the occasion of the 50th jubilee of the dogmas proclamation.
The dogma " Immaculate Conception "
On December 8, 1854, Pope Pius IX. proclaims the dogmatic bull Ineffabilis Deus doctrine, " which holds that the most Blessed Virgin Mary ( mother of Jesus) was preserved in the first instant of her conception ... unscathed from all stain of original sin ."
The veneration of Mary
A renewal of Marian devotion began in the 19th century, initiated by Pope Pius IX. the proclaimed dogma of the Immaculate Conception ( cf. Dogmatic Constitution Lumen Gentium on the Church, Chapter VIII: The Blessed Virgin Mary Mother of God in the mystery of Christ and the Church ) - ie the " Immaculate Conception." This dogmatic statement was later popes as a basis for the following " Marian encyclicals ":
- Pius X. Ad diem illum laetissimus 1904 ( this same encyclical described )
- Pius XII. Deiparae virginis mariae assumtio 1946 Fulgens Corona 1953 Ad caeli reginam 1954
- Paul VI. Mense Maio 1965 Christi Matri in 1966 and the two papal circular Signum magnum 1967 Marialis Cultus 1974
- John Paul II, Redemptoris Mater 1987