Each year, in the Roman Catholic ‘calendar’, on the 8th December, ‘The Feast of the Immaculate Conception’ is observed. Helpful information on what this feast relates to can be found on this Roman Catholic web site link
http://www.newadvent.org/cathen/07674d.htm
Just a few lines from the item on that link will give understanding as to who and what the term ‘Immaculate Conception’ refers to – there we read –
‘the Blessed Virgin Mary “in the first instance of her conception, by a singular privilege and grace granted by God, in view of the merits of Jesus Christ, the Saviour of the human race, was preserved exempt from all stain of original sin.”’
