Verbum supernum prodiens

You can read about the early (7th century?) hymn, Verbum supernum prodiens, at the Hymns and Carols of Christmas website, which also has a MIDI file of the melody, along with an English translation by J.M. Neale.

Verbum supernum prodiens

1. Verbum supernum prodiens
a Patre lumen exiens,
qui natus orbi subvenis
cursu declivi temporis:

2. Illumina nunc pectora
tuoque amore concrema;
audita per praeconia
sint pulsa tandem lubrica.

3. Iudexque cum post aderis
rimari facta pectoris,
reddens vicem pro abditis
iustisque regnum pro bonis.

4. Non demum artemur malis
pro qualitate criminis,
sed cum beatis compotes
simus perennes caelites.

5. Sit, Christe, rex piissime,
tibi Patrique gloria
cum Sancto Spiritu Paraclito,
in sempiterna saecula. Amen.

(attributed to Thomas Aquinas)

Here is a modern choral arrangement by Mocnik: