Christe qui lux es et dies

Christe qui lux es et dies. Latin, before 9th century, author unknown. This hymn is in the Ambrosian metre, but is thought not to be by him.‘Christe qui lux es et dies’ was quoted by Hincmar of Rheims in his controversy with Gottschalk of Orbais*, in Hincmar’s Collectio de una et non trina deitate (857). See JJ, p. 227. It was included in the Old Hymnal. The hymn is mentioned in Munich, Bayerische Staatsbibliothek, Clm 28118, an early 9th century manuscript containing Caesarius of Arles Rule for Nuns (written 534), and this has led some writers to date the hymn as early as the 5th or 6th century. In the New Hymnal (see ‘Medieval hymns and hymnals’*) it was sung daily at Compline in winter...