O magnum mysterium,
et admirabile sacramentum.
Ut animalia viderent
Dominum natum, iacentem 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
the Lord, Jesus Christ.
Alleluia!