Changes

When [[Nikon of Moscow]] was the primate, the Russian Church was engaged in introducing corrections alterations and amendments into its service books and rites. A great contribution to this was made by Patriarch Nikon, a bright personality and outstanding church reformer. Some clergymen and lay people did not understand and did not accept were perhaps more hesitant about accepting the liturgical reforms introduced by Patriarch Nikon and refused to obey were anathematised by the church authority. This was how These groups became known as the [[Old Believers]]' schism emerged, many of whom have now been subsumed into the [[Russian Orthodox Church Outside Russia]].