This book argues that spirituality is the modus operandi of our soul, body, and heart speaking and doing the Word of God, God-talk, or theology in everyday language. The book demonstrates this modus operandi of spirituality as a way of mystic science and reframe it with Korean indigenous concept maum. By so doing, the book suggests a new perspective and a way of doing an Asian feminist theology in conversation with constructive ethnography and anthropology as well.