Original: Throughout most of Christianity 's history , corporate Christian worship has been primarily liturgical , characterized by prayers and hymns , with texts rooted in , or closely related to , the Scripture , particularly the Psalter ; this form of sacramental and ceremonial worship is still practiced by the Roman Catholic , Eastern Orthodox , and Anglican churches , as well as some Protestant denominations such as Lutheranism and Methodism .
Simplified: A large amount of importance was placed on the forms of worship , as they were seen in terms of the Latin phrase lex orandi , lex credendi ( '' the rule of prayer is the rule of belief '' ) -- that is , the details of someones worship show , teach , and govern the principle beliefs of the community .