Te Deum

The ( or , ; from its incipit, is a Latin Christian hymn traditionally ascribed to AD 387 authorship, but with antecedents that place it much earlier. It is central to the Ambrosian hymnal, which spread throughout the Latin Church with other parts of the Ambrosian Rite of Milan in the 6th to 8th centuries. It is sometimes known as the Ambrosian Hymn, although authorship by Saint Ambrose is unlikely. The term can also refer to a short religious service (of blessing or thanks) based upon the hymn. History Authorship of the hymn is traditionally ascribed to Saint Ambrose (died 397) or Saint Augustine (died 430). In 19th-century scholarship, Saint Hilary of Poitiers (died 367) and Saint Nicetas of Remesiana (died 414) were proposed as possible authors. In the 20th century, the association with Nicetas has been deprecated, so that the hymn, while almost certainly dating to the 4th century, is considered as being of uncertain authorship. Authorship of Nicetas of Remesiana was suggested by the association of the name "Nicetas" with the hymn in manuscripts from the 10th century onward, and was particularly defended in the 1890s by Germain Morin. Hymnologists of the 20th century, especially Ernst Kähler (1958), have shown the association with "Nicetas" to be spurious. The Te Deum has structural similarities with a eucharistic prayer and it has been proposed that it was originally composed as part of one. The hymn was part of the Old Hymnal since it was introduced to the Benedictine order in the 6th century, and it was preserved in the Frankish Hymnal of the 8th century. It was, however, removed from the New Hymnal which became prevalent in the 10th century. It was restored in the 12th century in hymnals that attempted to restore the praiseful intent of the Rule of St. Benedict, Chap. 12: How the Morning Office Is to Be Said.