orthodoxy; orthodox faith
Refers to adherence to established or traditional religious doctrine, especially in Christian contexts. A formal, domain-specific term.
He criticized heresy from the standpoint of orthodoxy.
正統 means 'orthodox' or 'legitimate' in a broader sense, while 正統信教 specifically refers to orthodox faith or religious orthodoxy.
異端 means 'heresy' or 'heterodoxy', the opposite of 正統信教.
Compound of 正統 (orthodox) and 信教 (religious faith). The exact historical derivation is uncertain; the term is used in theological contexts.