3rd Marian Dogma: Immaculate Conception

” Through the centuries the Church has become ever more aware that Mary, “full of grace” through God, was redeemed from the moment of her conception. That is what the dogma of the Immaculate Conception confesses, as Pope Pius IX proclaimed in 1854:The most Blessed Virgin Mary was, from the first moment of her conception, by a singular grace and privilege of almighty God and by virtue of the merits of Jesus Christ, Savior of the human race, preserved immune from all stain of original sin. (CCC491)”

https://www.catholic.com/magazine/online-edition/hail-mary-conceived-without-sin

CCC = Catechism of the Catholic Church

Ark of the covenant, pray for us.