The Virgin Birth of Jesus in the Old Testament

In chapter 7 verse 14 of the book of Isaiah he speaks of a young woman who will conceive and bear a son, whose name will be Immanuel. Matthew uses the Old Testament not just in a way that has a this means that relationship where there's an Old Testament prophecy and New Testament fulfillment. Rather there's more logic of fulfillment as a filling out. A bringing of the text to a greater and higher expression of its meaning. So whereas in the original context it may have been referring to A.H., we find it within the context of Isaiah.