41 And when Elizabeth heard the greeting of Mary, the baby leaped in her womb. And Elizabeth was filled with the Holy Spirit, 42 and she exclaimed with a loud cry, “Blessed are you among women, and blessed is the fruit of your womb!
The Holy Bible: English Standard Version. (2016). (Lk 1:41–42). Wheaton, IL: Crossway Bibles.
41–42 To speculate about how Mary’s greeting caused the child to leap in Elizabeth’s womb (v. 41) would be to miss the unaffected beauty of this narrative in which the stirring of the unborn child becomes a joyful prelude to Elizabeth’s being “filled with the Holy Spirit,” who enlightened her about the identity of the child Mary was carrying (v. 42).
1:42Blessed are you among women Mary is blessed because she has the privilege of giving birth to the Messiah, the savior of the world.
 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, pp. 63–64). Grand Rapids, MI: Zondervan.