The Invitatory is the psalm Venite exsultemus, traditionally numbered 94 in the Septuagint or 95 in the Masoretic text, used to start Nocturns in the Divine Office.[1] After the reform of the Liturgy of the Hours following the Second Vatican Council, the Invitatory is said either before the Office of Readings or Lauds, whichever is said first in a liturgical day. In place of Psalm 94(95), Psalm 99(100), Psalm 66(67), or Psalm 23(24) may be used as circumstances may suggest.
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed (1913). Catholic Encyclopedia. Robert Appleton Company.