original_query: What is the significance of the 1979 Book of Common Prayer in the Episcopal Church?
query: What is the significance of the 1979 Book of Common Prayer in the Episcopal Church?
answer: The 1979 Book of Common Prayer is the official primary liturgical book of the U.S.-based Episcopal Church. It's the fourth major revision, succeeding the 1928 edition, and includes Eucharistic liturgy, Daily Office, and other services.  It was a significant product of the 20th-century Liturgical Movement, incorporating contemporary language and offering two rites (Rite I and Rite II). Its adoption, however, caused schism within the church, with some traditionalists continuing to use the 1928 version.