I find it a bit odd that it was actually Mary herself in v48 is the one who initiates the idea of calling herself blessed. At least on the surface there is the postential of not being humble about this. But the idea came originally from the earlier text.
Luk 1:28 And the angel came in unto her, and said, Hail, thou that art highly favoured, the Lord is with thee: blessed art thou among women.
Luk 1:41 And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost:
Luk 1:42 And she spake out with a loud voice, and said, Blessed art thou among women, and blessed is the fruit of thy womb.
Luk 1:43 And whence is this to me, that the mother of my Lord should come to me?
Luk 1:44 For, lo, as soon as the voice of thy salutation sounded in mine ears, the babe leaped in my womb for joy.
Luk 1:45 And blessed is she that believed: for there shall be a performance of those things which were told her from the Lord.
Read Gill’s account below..
But first note how many times Mary gets this right in praising God in all these specifics….
Truly she understood what the Westminster encourages us all to know:
Q. 1. What is the chief end of man?
A. Man’s chief end is to glorify God, and to enjoy him forever.
Mary’s Song of Praise: The Magnificat
Luk 1:46 And Mary said, My soul doth magnify the Lord,
Luk 1:47 And my spirit hath rejoiced in God my Saviour.
Luk 1:48 For he hath regarded the low estate of his handmaiden: for, behold, from henceforth all generations shall call me blessed.
Luk 1:49 For he that is mighty hath done to me great things; and holy is his name.
Luk 1:50 And his mercy is on them that fear him from generation to generation.
Luk 1:51 He hath shewed strength with his arm; he hath scattered the proud in the imagination of their hearts.
Luk 1:52 He hath put down the mighty from their seats, and exalted them of low degree.
Luk 1:53 He hath filled the hungry with good things; and the rich he hath sent empty away.
Luk 1:54 He hath holpen his servant Israel, in remembrance of his mercy;
Luk 1:55 As he spake to our fathers, to Abraham, and to his seed for ever.
Luk 1:56 And Mary abode with her about three months, and returned to her own house.
Gill writes on these phrases:
thou art blessed among women; and will be pronounced so by other women, as she was by Elisabeth, Luk 1:42 and by another woman, Luk 11:27.
And she spake out with a loud voice,…. So as that all in the house might hear; she spake with great vehemency of soul, and strength of affection, being under a very powerful impression of the Spirit of God: and said,
blessed art thou among women; the same words that the angel had said to her before, Luk 1:28.
and blessed is the fruit of thy womb: this is a reason why she is called blessed, because her child was blessed; being in union with a divine person, who is God over all, blessed for ever; and who has all spiritual blessings in him, and is that seed, in which all nations of the earth were to be blessed; and so is both blessed in himself, and the source of all blessedness to others. The Jews say (h), that the six measures of barley, Boaz gave to Ruth, Rth 3:15 signified, that six righteous men should spring from her, and among, them the Messiah; who should be blessed with six blessings, and they are these; the spirit of wisdom and understanding, of counsel and of might, the spirit of knowledge, and of the fear of the Lord; see Isa 11:2.
And blessed is she that believed….. Meaning Mary, a woman, a very young woman, and who had had things very incredible to nature and reason told her; and yet she believed, without objecting thereto, or requiring a sign; tacitly referring to the unbelief of Zacharias, who was a man, a man in years, a priest by office; and yet had been very incredulous, in a thing that was much more possible; because there had been instances of it before, in Sarah, Hannah, and Manoah’s wife; than what was related to the virgin, of which there had been none; and which to reason, and with men, was impossible: and happy indeed is every one, that has true faith in any degree; for faith is the faith of God’s elect, and is both a fruit and evidence of electing grace, which is the source of all blessings; it is the gift of God, and the operation of his Spirit, and can never be lost: many are the blessings such as believe are in the possession of, and openly entitled to; as the justification of their persons, the remission of their sins, their adoption into the household of God, liberty at the throne of grace, and a right to the eternal inheritance; they enjoy much solid peace, joy, and comfort in their own souls; bring much glory to God, and shall be saved in the Lord, with an everlasting salvation:
for behold, from henceforth all generations; not Jews only, but Gentiles also,
shall call me blessed; both on account of her son she had now conceived, and was bearing; because she was the mother of our Lord, who had reason so to conclude, from the nature of the thing, and from the words of the angel, and of Elisabeth, Luk 1:28 and much more than Leah had, who said something like this, at the birth of her second son, Gen 30:13 and also on account of her interest in Christ, as God her Saviour: in whom she was blessed, with all spiritual blessings; so that she was truly blessed, and might well be called so.