Original: A great deal of emphasis 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 specifics of one 's worship express , teach , and govern the doctrinal beliefs of the community .
Simplified: A worship service in these traditions is centered on the sharing of bread ( or bread and wine ) although it also includes prayer , the reading of Scripture , and usually singing and some form of teaching or sermon .