Bede

After these days, Elizabeth, his wife, conceived. Specifically, after the days of Zacharias' duty were completed. John, the bishop of the city of Constantinople, mentioning this most holy conception, said: "These events occurred in the month of September, on the eighth day before the Kalends of October, when the moon was beginning its eleventh day, at the time when it was necessary for the Jews to celebrate the fast of Scenopegia. And it was found that the same day, the eighth day before the Kalends of October, was the equinox, on which the beginning of the night is longer than the day. For he must increase, but I must decrease," (John 3). Indeed, the light had been diminished by the darkness, when the Jews, according to the law and prophecy, offered sacrifices to God; in which time John was conceived. For these are the things that were offered for the people's sins, which were to cease when John, the Baptist, was conceived. And therefore, Zacharias, his father, a priest of the Jews, became mute, because their sacrifices, which were offered for the people's sins, had to cease and fall silent. For the only priest was coming, who from his own lamb offered as a sacrifice, would offer the sacrifice to God for the sins of all. From the words of the Blessed John, we are taught that on the first day after the day of atonement, the change of the priestly order was celebrated, and therefore on this day the conception of the Lord's forerunner occurred. This day, not by chance, is a day of fasting and affliction foretold by the angel, because through him affliction of repentance was to be preached to men.

In the sixth month, the angel Gabriel was sent by God to a city of Galilee named Nazareth. Therefore, angels are called by private names so that it may be understood by the names even in their activities what they are capable of. For neither in that holy city, which He perfects with full knowledge of the vision of Almighty God, do they thus receive proper names, nor can their persons be unknown without names: but when they come to minister something to us, they also take names from their ministries among us. To Mary the virgin, then, Gabriel is sent, who is named the strength of God. For he was indeed coming to announce Him who deigned to appear humble to wrestle down the airy powers. Of whom the Psalmist says, "The Lord strong and mighty, the Lord mighty in battle" (Psalm 24). And again, "The Lord of hosts, he is the king of glory" (ibid.). Therefore, by the strength of God He was to be announced, who is the Lord of powers and mighty in battle, coming to war against the airy powers. Understand the sixth month as March, on the twenty-fifth day of which our Lord is said both to have been conceived and to have suffered, just as He is said to have been born on the twenty-fifth day of the month of December. Because whether we believe that the vernal equinox happens today (as some think) or that the winter solstice occurs at that time, it is surely fitting that He who illuminates every man coming into the world should be conceived or born with the increase of light. But if someone should prove that before the time of the Lord's nativity and conception, light either increased or overcame the darkness, we also say that John then preached the kingdom of heaven before His face and now too, preachers are commanded, "Prepare the way for him who ascends above the sunset" (Psalm 68). Why John was conceived around the autumn equinox and born around the summer solstice, he himself teaches either from his own or from the persona of the Old Testament (as many claim); "He must increase, but I must decrease" (John 3).

As to why he wished to be conceived and born not of a simple virgin but of one who was betrothed to a man, several of the Fathers have put forward reasonable answers. The best of these is to prevent her from being condemned as guilty of defilement if she were to bear a son when she had no husband. Then too, in the things the care of a home naturally demands, the woman in labor would be sustained by a husband’s care. Therefore blessed Mary had to have a husband who would be both a perfectly sure witness to her integrity and a completely trustworthy foster father for our Lord and Savior, who was born of her. He was a husband who would, in accordance with the law, make sacrificial offerings to the temple for him when he was an infant. He would take him, along with his mother, to Egypt when persecution threatened. He would bring him back and would minister to the many other needs consequent upon the weakness of the humanity which he had assumed. It did no great harm if, for a time, some believed that he was Joseph’s son, since from the apostles’ preaching after his ascension it would be plainly evident to all believers that he had been born of a virgin.

And yet Elisabeth conceives John, because the more inward parts of the Law abound with sacraments of Christ. She conceals her conception five months, because Moses in five books set forth the mysteries of Christ; or because the dispensation of Christ is represented by the words or deeds of the saints, in the five ages of the world.

Because either the Incarnation of Christ was to be in the sixth age of the world, or because it was to serve to the fulfilling of the law, rightly in the sixth month of John's conception was an angel sent to Mary, to tell her that a Saviour should be born. Hence it is said, And in the sixth month, &c. We must understand the sixth month to be March, on the twenty-fifth day of which our Lord is reported to have been conceived, and to have suffered, as also to have been born on the twenty-fifth day of December. But if either the one day we believe to be the vernal equinox, or the other the winter solstice, it happens that with the increase of light He was conceived or born Who lighteneth every man that cometh into the world. But if any one shall prove, that before the time of our Lord's nativity or conception, light began either to increase, or supersede the darkness, we then say, that it was because John, before the appearance of His coming, began to preach the kingdom of heaven.

(in Homil. de fest Annunt.) It was a fit beginning for man's restoration, that an angel should be sent down from God to consecrate a virgin by a divine birth, for the first cause of man's perdition was the Devil sending a serpent to deceive a woman by the spirit of pride.

(in Homil. de Annunt. sup.) Which last applies not only to Joseph, but also to Mary, for the Law commanded that every one should take a wife out of his own tribe or family. It follows, And the virgin's name was Mary.

Maria, in Hebrew, is the star of the sea; but in Syriac it is interpreted Mistress, and well, because Mary was thought worthy to be the mother of the Lord of the whole world, and the light of endless ages.

To a virgin betrothed to a man whose name was Joseph of the house of David, and the virgin's name was Mary. For many reasons, the Savior wished to be born not of a simple virgin, but of one betrothed. Firstly, evidently, so that through Joseph’s lineage, to whom Mary was a relative, Mary's origin could also be known. For it is not the custom of Scripture to trace the genealogy of women. For it can be understood from both that it is said of the house of David. Next, lest she should be stoned by the Jews as an adulteress, preferring that some should doubt her origin rather than the chastity of the parent. At the same time, it removes the occasion for impudent virgins, lest they say the mother of the Savior was defamed by false suspicions. Thirdly, so that while fleeing to Egypt and then returning, she would have the solace of a husband, who would exist equally as a protector and witness of her intact virginity. Fourthly, lest her birth be exposed to the devil; who if he knew he was born of a virgin, might perhaps fear to hand him over to death as eminently as other men. But Mary is called in Hebrew the star of the sea, and in Syriac lady; and rightly so, because she deserved to give birth to the Lord of the whole world, and the perpetual light for the ages.

He will be great, and will be called the Son of the Most High. And the Lord God will give him the throne of David his father. It is said of John that he will be great, but he as a great man, this one however as a great God. For he will be great before the Lord, but this one, it says, will be great, and will be called the Son of the Most High. Therefore, the same Son of the Most High who was conceived and born in the virginal womb. The same man in time, created from the mother, who is God born from the Father before all times. But if the same man who is God, Nestorius must cease to say that only a man was born from a virgin, and that he was received by the Word of God, not into the unity of person, but into an inseparable association. Otherwise, he is found to assert not one Christ, true God and man, but two (which is impious to say), and thus to preach not the Trinity, but a quaternity. However, the Catholic faith rightly confesses one Christ as one man of both flesh and soul, just as the angelic words signify, which had asserted that the throne of David his father was to be given to him. For he who would have the same father David, whom he declares will be called the Son of the Most High, demonstrates one person of Christ in two natures. He received the throne of David, so that certainly he might call to the eternal kingdom the people to whom David once and his sons provided temporal rule, which has been prepared for them from the foundation of the world.

And he shall reign over the house of Jacob forever, and of his kingdom there shall be no end. And Isaiah said: His empire will be multiplied, and there shall be no end of peace. Upon the throne of David, and upon his kingdom, to establish it and to uphold it in judgement and in justice (Isa. IX). He did not say in the acquisition of earthly glories and treasures, not in the victory over many nations or the subjugation of proud cities, but in judgment and justice. For by these the kingdom of Christ is multiplied and established, both in each of the faithful and in the universal Church throughout the earth. For he calls the whole Church the house of Jacob, which, whether born from a good root or grafted in, although it was a wild olive, is rightfully grafted into a good olive tree by faith. After the triumph of his passion, the Savior addressing it says: “You who fear the Lord, praise him; all you offspring of Jacob, glorify him” (Psal. XXI). However, Jesus is not said to be great in future words and to be called the Son of the Most High, to accept the scepter of David, and to reign over the house of Jacob, because, as the heretics senselessly think and fall away from the truth, Christ did not exist before Mary, but that the man assumed into God was glorified by that glory which the Word of God had with the Father before the world was; that is, the same name of the Son would mean the same person of Christ, man with God, full of grace and truth.