An ascription of glory to the Holy Trinity.

In the Liturgy of St. Basil the celebrant recites the "Gloria in Excelsis," "the Angelic Hymn," or what the western church calls the Greater Doxology [ Glory be to God on high...].

Almost all our prayers includes the "Gloria Patri," or the Lesser Doxology [ Glory be to the Father, Son and the Holy Spirit...].