Mary remembers her song of Praise word for word and gives it to Luke to record in his Gospel. She instructs him to place her Psalm during the time she and Aunt Elizabeth meet, for it is after the Holy Spirit conceived Jesus in her womb that she goes with haste, seeking Elizabeth.
Mary does not doubt her Visitation experiences-- the Angel, her acceptance, and God's foreshadowing of her womb. And now her heart joins with Elizabeth's as she has Elizabeth's full confirmation of God's wondrous plan of salvation through her Babe. Jesus' new life will gift us with New Life.
God's greatest Gift of His Son gives us the context of Christmas. The context is put into words by Jesus' mother. It is Praise of Mighty God. (Luke 1:46-55) The Old Testament Prophet, Micah, tells us that Jesus is, 'One who is to rule in Israel, whose origin is from of old, from ancient days.' (Micah 5:2) and 'He shall be the One of Peace.' (Micah 5:5)
Thus each Christmas time we review Mary's song of Praise and marvel at how inadequate our own Praise is. And yet, within our inadequacies we have Christ's assurance that Holy Spirit takes our simple and meager Praises and magnifies them for Heavenly Father's ears so that what we speak and pray is glorious to Him.
46 And Mary said,
“My soul magnifies the Lord,
47 and my spirit rejoices in God my Savior,
48 for He has looked with favor on the lowliness of his servant.
Surely, from now on all generations will call me blessed;
49 for the Mighty One has done great things for me,
and Holy is His Name.
50 His mercy is for those who fear Him
from generation to generation.
51 He has shown strength with His Arm;
He has scattered the proud in the thoughts of their hearts.
52 He has brought down the powerful from their thrones,
and lifted up the lowly;
53 He has filled the hungry with good things,
and sent the rich away empty.
54 He has helped His servant Israel,
in remembrance of His mercy,
55 according to The Promise He made to our ancestors,
to Abraham and to his descendants forever.”