This document discusses the origins and evolution of the church. It notes that in the Bible, the Greek word "ekklesia" referred to a gathering or movement of people called by God for a purpose, not a physical building. However, after Constantine in AD 313, the concept of "church" became more associated with a physical location or building called a "kirche." The document suggests we can learn from history that the church is meant to be a purposeful gathering of believers, not defined or limited by physical structures.