Mary was one of a faithful remnant of Israel, who for 400 silent years had been awaiting the arrival of their prophesied Savior. Now that His arrival is finally upon her, she is so filled with exceeding joy, that she cannot contain her worship. From her mouth comes an outburst of praise, filled with marvel and wonder. Though Mary may have never guessed her response would be made known to others, the church would echo her canticle for thousands of years.