Today, December 8th, is the great feast of the Immaculate Conception of the Blessed Mother of God, Mary most holy.
“The Most Holy Virgin Mary was, in the first moment of her conception, by a unique gift of grace and privilege of Almighty God, in view of the merits of Jesus Christ, the Redeemer of mankind, preserved free from all stain of original sin.”
- Ex Cathedra Statement of Pius IX in “Ineffabilis Deus”
If you are interested in studying the biblical and traditional basis of the Immaculate Conception and the other beautiful Marian Dogma check out these posts from several years back:
Mary Most Holy: ʻPotuit, decuit, ergo fecit!ʻ
Mary Most Holy: Mother of God & Ark of the New Covenant
image from the 'Public domain' via wikimedia commons. Immaculate Conception
Magisterial excerpt from Ott, L., 1957. Fundamentals of Catholic dogma