Mysticism
From dKosopedia
Mysticism is an approach to religion that generally involves direct experience of the divine unmediated by reason or has a "supernatural" emphasis often incorporated non-canonical "secret" writings. It involves the study of "divine mysteries".
Sufism is one of the main mystical movements in Islam. The Kaballa is an important mystical movement in Judaism. Monasticism is Christianity and Buddhism has strong mystical elements, and Gnosticism was a mystical movement within Christianity which is now viewed as "unorthodox" and is no longer widely followed. Many polytheist religions also have strong mystical elements. The Pentecostal and Charismatic movements in Christianity also have strong mystical elements.