Luke 1:42

Now she rightly calls the Lord the fruit of the virgin's womb, because He proceeded not from man, but from Mary alone. For they who are sown by their fathers are the fruits of their fathers.

She who had hid herself because she conceived a son, began to glory that she carried in her womb a prophet, and she who had before blushed, now gives her blessing; as it follows, And she spake out with a loud voice, Blessed art thou among women. With a loud voice she exclaimed when she perceived the Lord's coming, for she believed it to be a holy birth. But she says, Blessed art thou among women. For none was ever partaker of such grace or could be, since of the one Divine seed, there is one only parent.

Mary is blessed by Elisabeth with the same words as before by Gabriel, to show that she was to be reverenced both by men and angels.

This is the fruit which is promised to David, Of the fruit of thy body will I set upon thy throne. (Ps. 132:11.)

But because there have been other holy women who yet have borne sons stained with sin, she adds, And blessed is the fruit of thy womb. Or another interpretation is, having said, Blessed art thou among women, she then, as if some one enquired the cause, answers, And blessed is the fruit of thy womb: as it is said, Blessed be he that cometh in the name of the Lord. The Lord God, and he hath showed us light; (Ps. 118:26, 27.) for the Holy Scriptures often use and, instead of because.