As creeds developed in the latter years, Gokan Engi (a Buddhist theory of Engi; every phenomenon in this world are occurred by goin (right or wrong conduct which can be a cause of the happiness or trouble in the future) of all living things), Raya Engi (a Buddhist theory of Engi; every phenomenon in this world are occurred by arayashiki (to store consciousness, consciousness forming the base of all human existence)), Nyoraizo Engi (a Buddhist theory of Engi; every phenomenon in this world are occurred by Nyoraizo (the Buddhist nature)), fate (destiny), Rokudai Engi (Six major Buddhist theories of Engi) and so on are preached as the main principles of each creed.
後代に発展した教義としては、業感縁起・頼耶縁起・如来蔵縁起・法界縁起・六大縁起などが、それぞれの教学の中心として説かれる。