Their way is the only way. Their vague doctrine is to be accepted but not necessarily understood. Members are conformed by the group not transformed by God. Only their group knows and has the truth. Not even scripture is as powerful as the group's unwritten rules and traditions.
Members distrust themselves but trust completely in the group's beliefs and leaders.
Living a double life is common. A flaw in the group is viewed as a flaw in the member who sees it. Leaders brush off questions they don't have scriptural answers for. Individual interpretation or deviation is not allowed. There is a need to emulate the leaders.