In the Catholic Church, the seven standard O antiphons continue to serve as Magnificat antiphons at
Vespers from 17 to 23 December. Since the liturgical reforms following Vatican II, they are also used as the
Alleluia verses for Mass in the
Ordinary Form on the same days. For the Alleluia verses, the
Lectionary moves
O Emmanuel to the 21st, uses
Rex Gentium on both the 22nd and 23rd, and places
O Oriens on the morning of the 24th, but the traditional ordering from the 17th through the 23rd is also permitted. and Alleluia Verse at Mass, either in the traditional order as indicated in
Divine Worship: The Missal or in the order indicated in the Lectionary, but also use
O Virgo virginum on the morning of 24 December, both as the
Benedictus antiphon at morning prayer and as the Alleluia verse at Mass. Some Anglican churches, such as the
Church of England, use the O Antiphons at
evensong; often according to medieval English usage, beginning on 16 December. In 1986,
St. Mark's Episcopal Cathedral, Seattle conceived a special Advent liturgy using the O Antiphons, which has remained in practice every year since. Use of the O Antiphons also occurs in many
Lutheran churches. For example, an English translation of "The Great O Antiphons" appears with the hymn
O Come, O Come, Emmanuel in the
Lutheran Service Book . In the
Book of Common Worship published by the
Presbyterian Church (USA), the antiphons can be read as a praise litany at Morning or Evening Prayer. ==Musical settings==