Few pieces of music I know capture the mystery of the Incarnation better than Victoria’s motet “O Magnum Mysterium.” The words are:

O magnum mysterium,
et admirabile sacramentum,
ut animalia viderent Dominum natum,
jacentem in praesepio!
Beata Virgo, cujus viscera
meruerunt portare
Dominum Christum.
Alleluia.

O great mystery,
and wonderful sacrament,
that animals should see the new-born Lord,
lying in a manger!
Blessed is the Virgin whose womb
was worthy to bear
Christ the Lord.
Alleluia!

The music is: