https://en.wikipedia.org/wiki/Esoteric_Christianity
Esoteric Christianity is an approach to Christianity which features "secret traditions" that require an initiation to learn or understand. The term esoteric was coined in the 17th century and derives from the Greek ἐσωτερικός (esôterikos, "inner").. These spiritual currents share some common features, such as heterodox or heretical Christian theology; the canonical gospels, various ...