A creed, doctrine, or set of principles that form the teachings of a religion or system of thought.
その宗派の教義はかなり古い文献に基づいている。
The doctrines of that sect are based on quite old texts.
教義の解釈は時代とともに変わることがある。
Interpretations of doctrine can change over time.
彼は教義に厳格で、異論を認めない態度だ。
He is strict about doctrine and does not accept dissenting opinions.