Christ's Birth in Mathew - Just a Few Lines

I am working my way through Mathew, and sharing my impressions. Mathew doesn't focus on the immediate events surrounding His birth. In fact, he just spends a few sentences talking about it.

Mathew 1:25 (NIV) Says:

But he had no union with her until she gave birth to a son. And he gave him the name Jesus.

More time is spent on dealing with how Joseph handled the news of Mary's pregnancy. Chapter 2 starts off with the Magi, or Wise Men.

So, why does Mathew only talk about the actual birth in only one verse? I think it's because the main focus of the book is to establish that Jesus is The Christ, or Messiah.

As described in this post, that's why he started off with the genealogy. Then, we learn in this post about how Joseph came to accept the situation through the dream. We are meant to accept it, just like Joseph did.