The Te Deum is a Christian hymn. Its original text was Latin. It is named after the first few words, "Te Deum laudamus" (We praise thee, O Lord). It was probably written around the 4th or 5th century. Most say that either Augustine of Hippo or Ambrose wrote it. Some say it was by Nicetas, bishop of Remesiana. Others have said that the hymn was taken from two (or more) earlier hymns: one to God the Father and another to God the Son. After this idea, the second hymn begins with the phrase "Tu rex gloriae, Christe." The petitions at the end of the hymn (beginning "Salvum fac populum tuum") are from verses from the book of Psalms, added to the original hymn later on.