At the organizational level, too, the primitive church was a small-scale and organizationally flat structure. But as property and edification accumulated one generation after another, the hierarchies and specializations of knowledge and spiritual practices multiplied until one person could not easily feel acquainted with the body of knowledge that has been expanding.
One big change in the control of access to Holy Words (scripture) and relationships with God was the Reformation by the Protestants and with them the Anabaptists, ultimately with the extreme accountability on the cellular individual that Quakerism expresses as "that of God within each person." Thereby the circle is completed: from the egalitarian Primitive Churches to the layers of hierarchy to administer a giant body of believers and back to the flat structure with each person in relationship to God and to one's neighbors. By shifting the channel of communication away from Mass and the celebrant official, and instead privileging the Words of God (in one's own vernacular, continually being revised in light of growing scholarly understanding) there is meant to be direct access of the person with God and with one another. Any yet The Way remains as narrow as it was in the time of Rabbi Jesus.