When the Angel Gabriel announces Christ’s coming birth when saying the ‘Hail Mary’ a mystery is also revealed about Mary herself – Her immaculate conception, Mary was kept clean from Original sin . Mary is considered the “Second Eve”. She reversed the disobedience of our first mother, and with the willingness to be the Mother of God, she became a mother to every human being. A beautiful day when Mary was born became a day we could all be free from sin if we are willing.