Over the two thousand years of church history, various churches have been raised up at different times. This we may call the cause of time. Then as churches have been formed in different areas, area has become a cause. Also, with the raising up of different human instruments used in the planting of churches, people have become a cause. In addition to these three causes of time, area, and person, there is further the cause of emphasis on a particular truth in the Bible. The Word of God contains so many aspects of truth that people tend to establish churches based on one special truth. Maybe in a certain area there arises a special need and someone comes forth with a particular emphasis on one aspect of truth.