500
                            The first half of this prayer is taken from scripture, the other half is fact and a petition for prayer.
Clues:
Luke 1:28 & Luke 1:42
Angel & a relative
                            What is the Hail Mary.
Luke 1:28, the angle Gabriel's greeting, "Hail Mary full of grace, the Lord is with you,".
Luke 1:42, Elizabeth's response to Mary in the visitation, "Blessed are you among women and lessed if the fruit of your womb,"
Holy Mary, MOTHER OF GOD (Jesus), Pray for us (petition) sinners...