Lex Orandi, Lex Credendi
A Latin phrase often used in the study of liturgy, it means “the rule of prayer [is] the rule of belief.” The phrase describes the pervasive pastoral reality that habits of prayer shape Christian belief. Official provisions for worship can thus have a determinative role in shaping Christian doctrine.
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from “An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians,” Don S. Armentrout and Robert Boak Slocum, editors.