(Isa 7:14 KJV) Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.
(Proverbs 19 also read)
One of the miracles about the birth of Christ is what is called The Virgin Birth. This is a show stopper for some people, even those who claim to be Christians. For some reason they can accept that God created the universe out of nothing and we will live forever in heaven but they have trouble with a virgin birth. For some people thinking things through is not a daily event.
This is the Old Testament prophecy. I personally don’t think the people Isaiah was writing to understood this as a messianic prophecy. Maybe. Maybe not. It is true that the word translated “virgin” (5959) could mean “young woman”. That is the nature of prophecy. I think it is meant to tease and confuse at the same time. The reason Bible believing Christians should accept the Virgin Birth is not the prophecy of Isaiah but the witness of the New Testament. Both Matthew and Luke bear witness,
(Luk 1:27 KJV) To a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin's name was Mary.So? I know biology. You know biology. We also know God and if we can accept the awesomeness of Jesus going to the cross to pay for our sins I think the Virgin Birth is also within the range of our belief. Merry Christmas.