All right then, the Lord Himself will give you the sign. Look! The virgin will conceive a Child! She will give birth to a Son and will call Him Immanuel (which means ‘God is with us’). (Isaiah 7:14 NLT)
This is how Jesus the Messiah was born. His mother, Mary, was engaged to be married to Joseph. But before the marriage took place, while she was still a virgin, she became pregnant through the power of the Holy Spirit. Joseph, her fiancé, was a good man and did not want to disgrace her publicly, so he decided to break the engagement quietly. As he considered this, an angel of the Lord appeared to him in a dream. “Joseph, son of David,” the angel said, “do not be afraid to take Mary as your wife. For the child within her was conceived by the Holy Spirit. And she will have a son, and you are to name Him Jesus, for He will save His people from their sins.” All of this occurred to fulfill the Lord’s message through His prophet: “Look! The virgin will conceive a child! She will give birth to a son, and they will call Him Immanuel, which means ‘God is with us.'” (Matthew 1:18-23 NLT)
Often prophecies in the Old Testament apply to something in the near future and also to a future event. Isaiah 7:14 has a dual prophecy. God gave this prophecy to King Ahaz of Judah a promise that a child would be born and before the child is of a certain age the previous prophecies concerning Jerusalem would be fulfilled. We are not sure who the young woman was that is mentioned.
Virgin also means young woman. Matthew applies the prophecy of Isaiah 7:14 to Mary, who was engaged to Joseph. Before her marriage, she became pregnant through the power of the Holy Spirit. The title of the child to be born is Immanuel which means ‘God is with us.’
God is still with us today through the power of the Holy Spirit.