The noun mysticism, a general term dating from the 17th century, eluded all attempts of students of religion and the psychology of religion to define it in the 19th and early 20th century [1]; [3]; [5]. More recent researchers therefore use it only as a heuristic term for highly diverse phenomena of an intense individual experience of bonding or union (Latin unio mystica) with God, the divine, the holy, etc. – always in specific cultural and social contexts. Thes…