"Narodil se Kristus Pán" (The Lord Christ Was Born), in English version "Be joyful, Earth and starry sky" is a Czech Christmas carol and Christian hymn.

The text and melody come from the oldest preserved record of the song in Latin ("En Virgo parit filium") and Czech in the Gradual of the Czech Silver Museum in Kutná Hora,[1] written in the late 15th century, but the song itself is considered to be older.

The simple and jolly melody has been varied several times, most notably into the German "Freu dich, Erd und Sternenzelt."

The Old Czech tune did not contain the tritone (augmented fourth) in the beginning, which can be heard in today's modern editions without exception.

5) Ó milosti Božská, budiž s námi; dejž, ať zlost ďábelská nás nemámí.