Numina was also a Roman term, denoting the "spirits" that their worldview had surrounding them -- Spirits of the trees, water, animals and also abstract concepts like war and drought. According to Ninian Smart (perpetrator of The Seven Dimensions of Religion), Rudolph Otto coined the term to refer to "the feeling aroused by a mysterium tremendum et fascinans, a mysterious something which draws you to it but at the same time brings an awe-permeated fear. It is a good characterization for many religious experiences and visions of God as Other. It captures the impact of the prophetic experiences of Isaiah and Jeremiah, the theophany through which God appeared to Job, the conversion of Paul, the overwhelming vision given to Arjuna in the Hindu Song of the Lord, the Bhagavadgita. At a gentler level it delineates too the spirit of loving devotion, in that the devotee sees God as merciful and loving, yet Other, and to be worshipped and adored."

Standing in contrast to the numinious type of religious experience is the mystical type, where the quest for God is an internal, contemplative one--seeking the Divine Being within. There are also conversion experiences, such as being "born again"; and shamanic experiences, where a person goes on a vision quest to acquire knowledge and power.