Does the book of Isaiah say anything about Jesus of Nazareth?

[Thats my opinion]

5. The three Isaiah and Jesus

I think it was Mark Twain who commented that he heard Isaiah was not written by Isaiah, but by someone with the same name. There are three different writers who shared what we now call Isaiah, and they came from different time periods.

These writings may point to a time ahead in which the Jews in Babylonian captivity were offered hope. But Jesus doesn't appear until centuries later. You cannot say from the first century AD that someone five centuries earlier is talking about any specific historic event or person. All you can say is somebody promised hope and hope came.

You are right. There was no prophecy that a virgin should conceived centuries later. It was a young woman and that came about two chapters later in Isaiah.

Isaiah is about what was happening during that era--and is not about Jesus.