I've found these messages to be very stimulating and challenging, no matter what your own ecclesiology might be! You may never look at your current church meetings' structure again the same way!
Jon Zens is an American author, speaker, scholar and theologian on Christian topics. Zens is also an expert on the Anabaptist history and theology. He holds a B.A. in Biblical studies from Covenant College, a M.Div. from Westminster Theological Seminary, Philadelphia, and a D.Min. from the California Graduate School of Theology. He is the editor of Searching Together magazine, which was originally started in 1972 as the Baptist Reformation Review.
Here are the links to the 2 parts of the message; given over 2 Sundays.