A messianic prophecy
Born of a Virgin
The promise
The words were first spoken to a frightened king. Around 735 years before Christ, Ahaz of Judah faced two enemy armies marching on Jerusalem, and his heart, the prophet says, was moved as the trees of the wood are moved with the wind. Isaiah came to him with a word of comfort and offered him a sign from the Lord, as high as heaven or as deep as the grave. Ahaz, feigning piety, refused to ask, and Isaiah answered with a sign given to the whole house of David instead.
The promise, in its own moment, spoke of deliverance in Ahaz's own day: before a child yet to be born would be old enough to know right from wrong, the two kings he feared would be gone. The immediate crisis would pass. Yet the sign was larger than the crisis that occasioned it. It was addressed not only to Ahaz but to the house of David, the royal line to whom God had promised an everlasting throne, and it named the child Immanuel, God with us, a name that reached far beyond any ordinary birth of that generation.
The Hebrew word Isaiah used, almah, means a young woman of marriageable age, one who in that culture would be presumed a virgin. When Jewish scholars translated their own Scriptures into Greek two centuries before Jesus, in the version called the Septuagint, they rendered it parthenos, the plain word for virgin. That is the reading Matthew inherited and the reading the early church received, and it is worth remembering that this translation was made by Jewish hands long before any Christian had reason to shape it.
Isaiah's whole book circles back to this hope again and again. Two chapters later he sings of a child born, a son given, whose name is Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace, and whose government and peace would have no end upon the throne of David. The sign of the virgin's son stands at the head of a long series of promises, all pointing to a coming king who would be more than a king, God himself present with his people.
“Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.”Isaiah 7:14
The fulfillment
Matthew tells the story of Joseph, a just man betrothed to Mary, who learns she is with child before they have come together. Torn between the law and his mercy, he resolves to put her away quietly rather than shame her. Then an angel appears in a dream and tells him the child is conceived of the Holy Ghost, and that he is to name him Jesus, for he shall save his people from their sins. At that point Matthew stops the narrative to point back across the centuries.
He quotes Isaiah's sign directly and declares its purpose. What happened in that quiet house in Nazareth was not an accident of history but the keeping of an ancient word: Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet. The virgin has conceived. The son is born. And the name Immanuel, God with us, is not a title Jesus would earn by his life but the truth of who he was from his first heartbeat.
Luke tells the same wonder from Mary's side, recording her question to the angel, how shall this be, seeing I know not a man, and the answer that the Holy Ghost would come upon her, and the power of the Highest overshadow her. From two independent Gospels, written for different audiences, the same claim rings out: this child had no human father, and his coming was the direct act of God entering his own creation.
The early church guarded this claim carefully, not as a curiosity but as a cornerstone. Matthew's Gospel opens with a long genealogy that runs through the fathers of Israel, and then breaks its own pattern at the last name, refusing to say that Joseph begat Jesus, saying instead that Mary, of whom was born Jesus, who is called Christ. The break in the pattern is deliberate. The line of David comes to Jesus through Joseph's legal fatherhood, but the life in the womb is from God alone.
“Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying, Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.”Matthew 1:22-23
Why it matters
The distance between the promise and its keeping is part of the wonder. Isaiah spoke to a king who would be dust for seven hundred years before the sign was fully given. No human planner could have arranged a fulfillment across so many generations, through the fall of Jerusalem, the exile in Babylon, the return, and the long centuries of foreign rule. The promise simply waited in the Scriptures, read and reread in synagogue after synagogue, until the morning it came true in a town too small to notice.
The name is the heart of it. Immanuel means that the gap between God and humanity, which no ladder of religion or effort could ever climb, is closed from the other side. God did not send only a message or a rule or a hero. He came himself, small enough to be held, hungry enough to nurse, near enough to touch. Every later fulfillment in this list, the wounds, the cross, the empty tomb, flows from this first one: God is with us, and he has come to save.
This is why the virgin birth has always mattered to the church, and why it is more than a marvel of biology. It marks the entrance of the eternal into time, the moment the Word was made flesh and dwelt among us. The One who fulfills every other prophecy is not a great man raised up from below but God come down from above, and that single fact changes what his whole life, death, and resurrection mean.
It also speaks tenderly to anyone who feels far from God. The first thing the Scriptures announce about the Messiah is not his power to judge but his willingness to draw near, to be called God with us. Whatever distance you feel, the name over the manger answers it. He did not wait for us to come up to him; he came down to be with us, and he has never stopped being Immanuel to all who receive him.
Questions people ask
Does the Hebrew word in Isaiah 7:14 mean virgin?
The Hebrew almah means a young woman of marriageable age, who in that culture would normally be a virgin, though the word does not stress virginity the way a different term would. The older Greek translation rendered it parthenos, virgin, and Matthew follows that reading, seeing in Jesus the fullest meaning the text could bear.
Did Isaiah's sign have a meaning in his own day?
Yes. The child was a sign to King Ahaz that the two kings threatening Judah would fall within a short span. Matthew does not deny that near-term function. He sees a deeper layer completed in Jesus, whose birth answers the name Immanuel, God with us, more fully than any child of Isaiah's time ever could.
Why does it matter that Jesus was born of a virgin?
The virgin birth marks the entrance of the eternal God into his own creation. It means Jesus was not merely a great man raised up from below but God come down from above, conceived by the Holy Spirit. The name Immanuel, God with us, is not a title he earned but the truth of who he was from his first heartbeat, and every other prophecy flows from this one: God has come near to save.