Hodie Christus natus est; hodie salvator apparuit; hodie in terra canunt angeli, letantur archangeli; hodie exultant justi dicentes: Gloria in excelsis deo, Alleluya!
Translation
Today Christ is born; today the savior has appeared; today the angels sing on earth, the archangels rejoice; today good people exult, saying: Glory to God in the highest. Alleluia!