The short form is just Matthew 1:18-23
To read the short form is to eliminate the genealogy, But the solemn mystery is bound up in those names.
These two sections are also the Gospel of December 17 and 18.
I spoke on the Genealogy here last December 17
And I spoke on Matthew I:18-23 here on December 18
You may find a fuller explanation on these texts if you listen to those two homilies.
My meditation for today, The Nativity of the Blessed Virgin Mary is below: