The word the Athenians used for their Assembly was Ekklēsia, the same word used in the New Testament for Church (and it is the greatest philological irony in all of Western history that this word, which connoted equal participation in all deliberations by all members, came to designate a kind of self-perpetuating, self-protective Spartan gerousia—which would have seemed patent nonsense to Greek-speaking Christians of New Testament times, who believed themselves to be equal members of their Assembly.)
Ch.IV The Politician and the Playwright: How to Rule - Sailing the Wine-Dark Sea: Why the Greeks Matter (2003)