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'''The Divine Liturgy of St. Gregory the Great''' is one of the liturgies authorized for use by the [[AOCA|Antiochian]] [[Western Rite Vicariate]] (AWRV). It is authorized for use in the The AWRV in two forms: that of the ''Orthodox Missal'' and that s authorized text of the ''Saint Andrew's Service Book,'' although nearly all parishes Mass is found in the AWRV celebrate only that of the ''Orthodox Missal''. The basis of the liturgy is the Tridentine Mass of 1570 as it was used in celebrated by the Society of Clerks Regular Secular of St Basil(SSB), an a formerly independent church without a bishop that formed the basis of the Antiochian Western Rite Vicariatein 1961. It is also authorized for use within the Russian Orthodox Church Outside of Russia (ROCOR). The [[Mass]], or Liturgy , of St. Gregory the Great, has also been authorized for use by and celebrated within the Polish Orthodox Church, the Patriarchate of Moscow, the Russian Orthodox Church Outside of Russia, and the Alexandrian Patriarchate.

*[http://members.aol.com/frnicholas/liturgy.htm The Divine Liturgy according to the Rite of St. Gregory the Great] as celebrated by the Antiochian Western Rite Vicariate.