The independent sacramental movement (ISM) refers to a loose collection of individuals and Christian denominations that are not part of the historic sacramental Christian denominations embodying catholicity (such as the Catholic Church, Eastern Orthodox Church, and Anglican churches) and yet continue to practice the historic sacramental rites independently.[1]
The term was used in 2005 by John Plummer, in The Many Paths of the Independent Sacramental Movement,[2] and was used earlier, in 2002, by Richard Smoley in his Inner Christianity.[3]
One relatively underreported segment of the incredible spiritual mosaic which is Western religious life today is the large number of small independent churches of sacramental, Catholic style and practice. Mostly of Anglican, Eastern Orthodox, or Roman Catholic derivation and character, they emphasize the importance of the sacraments, and generally claim authentic apostolic succession.