And whence is this to me? The happy medium observed by Elisabeth is worthy of notice. She thinks very highly of the favors bestowed by God on Mary, and gives them just commendation, but yet does not praise them more highly than was proper, which would have been a dishonor to God. For such is the native depravity of the world, that there are few persons who are not chargeable with one of these two faults. Some, delighted beyond measure with themselves, and desirous to shine alone, enviously despise the gifts of God in their brethren; while others praise them in so superstitious a manner as to convert them into idols. The consequence has been, that the first rank is assigned to Mary, and Christ is lowered as it were to the footstool. [1] Elisabeth, again, while she praises her, is so far from hiding the Divine glory, that she ascribes everything to God. And yet, though she acknowledges the superiority of Mary to herself and to others, she does not envy her the higher distinction, but modestly declares that she had obtained more than she deserved. She calls Mary the mother of her Lord This denotes a unity of person in the two natures of Christ; as if she had said, that he who was begotten a mortal man in the womb of Mary is, at the same time, the eternal God. For we must bear in mind, that she does not speak like an ordinary woman at her own suggestion, but merely utters what was dictated by the Holy Spirit. This name Lord strictly belongs to the Son of God "manifested in the flesh," (1-Timothy 3:16,) who has received from the Father all power, and has been appointed the highest ruler of heaven and earth, that by his agency God may govern all things. Still, he is in a peculiar manner the Lord of believers, who yield willingly and cheerfully to his authority; for it is only of "his body" that he is "the head," (Ephesians 1:22, 23.) And so Paul says, "though there be lords many, yet to us," that is, to the servants of faith, "there is one Lord," (1-Corinthians 8:5, 6.) By mentioning the sudden movement of the babe which she carried in her womb, (ver. 44,) as heightening that divine favor of which she is speaking, she unquestionably intended to affirm that she felt something supernatural and divine.

Footnotes

1 - "Christo velut in subsellium redacto." Subsellium is evidently not employed here to convey a shade of the honor belonging to the seats.

And whence is this to me? - An expression of humility. Why is it that the mother of my Lord should come to me, as if to honor me?
Mother of my Lord - The word "Lord" sometimes denotes "divinity," and sometimes superior, master, teacher, or governor. It was given by the Jews to their expected Messiah; but whether they understood it as denoting divinity cannot now be ascertained. It is clear only that Elizabeth used it as denoting great dignity and honor.

The mother of my Lord - The prophetic spirit, which appears to have overshadowed Elisabeth, gave her a clear understanding in the mystery of the birth of the promised Messiah.

And whence is this to me,..... How comes it to pass, that such notice is taken of me, such an honour is done me; that besides being favoured with a child, who shall be great,
that the mother of my Lord should come to me? Elisabeth was far from envying the superior honour conferred on her kinswoman, who was both meaner and younger than she; that she esteems it a wonderful favour, that she should be indulged with a visit from her, who had already conceived the Messiah: and in due time would be the mother of him, as man; who, in his divine nature, is Lord of all angels, and men, and every creature; and in an especial manner was her Lord, and the Lord of all the saints; by his Father's gift from eternity, by his own purchase in time, and by the power of his grace on each of their souls. Thus the virgin is said to be the mother of our Lord, and so may be called the mother of God; because she was parent of that child, which was in union with him, who is truly Lord and God: Just in such sense as the Lord of life and glory is said to be crucified, and God is said to purchase the church with his own blood,

"The mother of my Lord"--but not "My Lady" (compare Luke 20:42; John 20:28)" [BENGEL].