The main reason for thousands of doctrines and splits... are to cut off the dead/flawed doctrinal branches. Anything of man is inherently flawed. The living church struggles and seeks to be and keep godliness ... even though it is a "human institution" and thus flawed. It aspires, grows, changes and explores and re-explores that which is in the Bible. Seeking to be or to become or to provide a way for man to be beloved to God like His son Jesus.