Creator of the stars of night,
Your people’s everlasting light,
Oh Christ, Redeemer of us all,
We pray you, hear us when we call.
When this old world drew on toward night,
You came, but not in splendor bright,
Not as a monarch but a child
Of Mary, chosen mother mild.
At your great name, O Jesus, now
All knees must bend, all heart must bow;
All things on earth with one accord,
Like those in heaven, shall call you Lord.
To God the Father, God the Son,
And God the Spirit, Three in One,
Praise, honor, might, and glory be
From age to age eternally. Amen.
– Medieval Chant (translated from Latin)
You can here it sung here. (It’s it’s the best I could find.)