Mary is our model of hearing the word of God and observing it

"He replied, “Rather, blessed are those who hear the word of God and observe it.”  (Luke 11: 28)

In this scripture verse, Jesus points to His mother as the perfect model of hearing the word of God and observing it.  Mary burst into the New Testament by her reply to the incredible message of the angel that she would conceive by the power of the Holy Spirit and become the mother of Jesus.  She replied, "“Behold, I am the handmaid of the Lord. May it be done to me according to your word.” 

When we hear God's word in scripture and reply like Mary, "Behold I am your servant O Lord. May it be done to me according to your word."  Jesus pronounces us blessed, very happy and to be envied.