And the angel answered and said unto her, The Holy Ghost {g} shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that {h} holy thing which shall be born of thee shall be {i} called the Son of God.

(g) That is, the Holy Spirit will cause thee to conceive by his mighty power.

(h) That thing which is pure and void of all spot of uncleanliness: for he that was to take away sin must of necessity be void of sin.

(i) Declared and shown to the world to be the Son of God.

People's New Testament

1:30-33 Fear not. In the angel's message we have, (1) An assurance, Fear not. (2) A promise, Thou shalt bring forth a son (Lu 1:31). (3) A command, Thou shalt call his name JESUS (Lu 1:31). (4) A prophecy, He shall be great, the Son of the Highest, sit on David's throne, reign forever (Lu 1:32).

Wesley's Notes

1:35 The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee - The power of God was put forth by the Holy Ghost, as the immediate Divine agent in this work: and so he exerted the power of the Highest as his own power, who together with the Father and the Son is the most high God. Therefore also - Not only as he is God from eternity, but on this account likewise he shall be called the Son of God.

Jamieson-Fausset-Brown Bible Commentary

35. Holy Ghost-(See on [1538]Mt 1:18).

power of the highest-the immediate energy of the Godhead conveyed by the Holy Ghost.

overshadow-a word suggesting how gentle, while yet efficacious, would be this Power [Bengel]; and its mysterious secrecy, withdrawn, as if by a cloud, from human scrutiny [Calvin].

that holy thing born of thee-that holy Offspring of thine.

therefore . Son of God-That Christ is the Son of God in His divine and eternal nature is clear from all the New Testament; yet here we see that Sonship efflorescing into human and palpable manifestation by His being born, through "the power of the Highest," an Infant of days. We must neither think of a double Sonship, as some do, harshly and without all ground, nor deny what is here plainly expressed, the connection between His human birth and His proper personal Sonship.

Matthew Henry's Concise Commentary

1:26-38 We have here an account of the mother of our Lord; though we are not to pray to her, yet we ought to praise God for her. Christ must be born miraculously. The angel's address means only, Hail, thou that art the especially chosen and favoured of the Most High, to attain the honour Jewish mothers have so long desired. This wondrous salutation and appearance troubled Mary. The angel then assured her that she had found favour with God, and would become the mother of a son whose name she should call Jesus, the Son of the Highest, one in a nature and perfection with the Lord God. JESUS! the name that refreshes the fainting spirits of humbled sinners; sweet to speak and sweet to hear, Jesus, a Saviour! We know not his riches and our own poverty, therefore we run not to him; we perceive not that we are lost and perishing, therefore a Saviour is a word of little relish. Were we convinced of the huge mass of guilt that lies upon us, and the wrath that hangs over us for it, ready to fall upon us, it would be our continual thought, Is the Saviour mine? And that we might find him so, we should trample on all that hinders our way to him. Mary's reply to the angel was the language of faith and humble admiration, and she asked no sign for the confirming her faith. Without controversy, great was the mystery of godliness, God manifest in the flesh, 1Ti 3:16. Christ's human nature must be produced so, as it was fit that should be which was to be taken into union with the Divine nature. And we must, as Mary here, guide our desires by the word of God. In all conflicts, let us remember that with God nothing is impossible; and as we read and hear his promises, let us turn them into prayers, Behold the willing servant of the Lord; let it be unto me according to thy word.