Noun
The inward forms of faith and religion; transcendence, mystic experience, and internal realizations of the Divine.
Being esoteric.
Source: en.wiktionary.orgThere is no theophany that is not prefigured in the very constitution of the human being, made as it is "in the image of God"; and esoterism aims at actualizing what is divine in this mirror of God that is man. Frithjof Schuon
Insights into Islamic Esoterism and Taoism (Sophia Perennis 2003) In this view, "it is absolutely necessary to be a Muslim" to be a true Sufi, because Sufism's "methods are inoperative without" Muslim "affiliation". Source: Internet