45 “Blessed” describes the happy situation of those God favors. Elizabeth gave the blessing Zechariah’s muteness prevented him from giving. See vv. 68–79 for the blessing he later pronounced on the infant Jesus. Luke uses the blessing Elizabeth gave Mary to call attention to Mary’s faith.
The way in which v. 45 supplements v. 42 is noteworthy. In v. 42, Mary is called the “blessed” one because of her maternal relationship with her son Jesus. In v. 45, however, Mary is recognized to be truly “blessed” because of her faith in and obedience to God. The same contrast is developed later in the Lukan material. In 8:19–21, for example, Jesus redefines family relationship in terms of one’s faith in and obedience to God: “My mother and brothers are those who hear God’s word and put it into practice” (v. 21).
45. And blessed is she who believed,
Because there will be a fulfilment of the words
Spoken to her by the Lord.
Although the rendering “And blessed is she who believed that there will be,” etc., is also possible, the first translation has the following in its favor:
- The positive assurance that God is going to fulfil his promises to Mary is a more solid ground, a more valid reason, for calling her “blessed” than her own subjective faith in the fulfilment of these promises.
- “Blessed is she who believed” is a richer expression than “Blessed is she who believed that,” etc. The first rendering more definitely than the second describes Mary as a woman of faith.
- “Blessed is she who believed” is in line with “Blessed are those who, though not seeing, are yet believing” (John 20:29). See also Gen. 15:6 (cf. Rom. 4:3; Gal. 3:6, 9; James 2:23).
- As to conciseness of phraseology, the beatitude “Blessed is she who believed” is also more in line with the familiar beatitudes of Luke 6:20 f., cf. Matt. 5:1 f.
- Finally, the construction, “Blessed is she who believed,” describes more adequately than does its alternative what had been Mary’s reaction to Gabriel’s message.
That reaction, it will be recalled, had been: first, alarm and astonishment (verse 29); then, an earnest request for an explanation (verse 34); and finally, the complete surrender that characterizes the person who lives by the rule, “Trust and obey” (verse 38). For the rest, see the note on verse 45 on p. 99.
As to … “there will be a fulfilment,” etc., note the following: the words of the Lord (via Gabriel) recorded in 1:31a, 35a (unique conception) had already been fulfilled, and the promises contained in 31b, 32, 33, 35b (still largely unfulfilled) were going to be realized, as the rest of the Gospels, etc., abundantly prove.
What deserves special attention is this outstanding fact, namely, that in Elizabeth’s entire exuberant exclamation (verses 41b–45) envy never raises its head. Elizabeth was, after all, much older than Mary (cf. 1:7, 18, 36 with 2:5). Yet this aged woman is deeply conscious of her own unworthiness and genuinely rejoices in the joy of her much younger relative!
How can this complete absence of the begrudging attitude be explained? The answer is found in 1 Cor. 13:4: “Love does not envy.” Is not this a good reason for calling this poem “Elizabeth’s Song of Love”?
1:45 Mary’s faith contrasts with the doubt of Zacharias. Blessed is she who believed: Mary’s response of faith was exemplary. She was simply waiting on God to bring His promises to fulfillment.
1:45 — “Blessed is she who believed, for there will be a fulfillment of those things which were told her from the Lord.”
What would have happened had Mary not believed Gabriel’s words? Would she have disqualified herself to be the mother of Jesus? The fact is she did believe, and God did fulfill His word in her.
 Liefeld, W. L., & Pao, D. W. (2007). Luke. In T. Longman III & D. E. Garland (Eds.), The Expositor’s Bible Commentary: Luke–Acts (Revised Edition) (Vol. 10, p. 64). Grand Rapids, MI: Zondervan.
 Hendriksen, W., & Kistemaker, S. J. (1953–2001). Exposition of the Gospel According to Luke (Vol. 11, pp. 97–98). Grand Rapids: Baker Book House.
 Radmacher, E. D., Allen, R. B., & House, H. W. (1999). Nelson’s new illustrated Bible commentary (p. 1250). Nashville: T. Nelson Publishers.
 Stanley, C. F. (2005). The Charles F. Stanley life principles Bible: New King James Version (Lk 1:45). Nashville, TN: Nelson Bibles.