Mary speaks as if God has already accomplished everything. But she’s right: God has already won. We might as well give up and join in.
When we hear this story we tend to focus on the Virgin Birth. But there may be a greater miracle here: the fact that Mary says "yes."
Revelation 12 suggests that there's more going on under the surface of the Christmas story, and more going on in our own lives, than what we can see and touch.