Friends, the Immaculate Conception is one of the Marian dogma. It was declared by Pope IX in 1854 and stipulates that the Blessed Virgin Mary was conceived without any stain of Original Sin in preparation for becoming the Mother of God, the Son Jesus Christ. This was, through a very special grace.
In today's Gospel, the angel refers to Mary as "Kecharitomene", meaning, "full of grace."
God gave Mary a special treatment in order to prepare a worthy vessel for the reception of his Word. Just as the Holy of Holies in the temple was kept pure and inviolate, the definitive Temple, the true Ark of the Covenant, which is Mary herself, should all the more be untrammeled. God, in his plan, made Mary, Mother of the Redeemer, even though she is herself redeemed by the grace of her Son. (Bl. John Duns Scottus).
God's infinite love for humanity is activated through the Immaculate Conception. No wonder the Bible says that He has a plan for each of us. (Jeremiah 29:11)
As the Virgin Mary participated in that plan, so we certainly should today.
O Mary conceived without sin, pray for us who have recourse to thee.
Fr. Georges sac