Many people today understand the church as a building.This is not a biblical understanding of the church. The word “church” comes from the Greek word ekklesia which is defined as “an assembly” or “called-out ones.” The root meaning of “church” is not that of a building, but of people. It is ironic that when you ask people what church they attend, they usually identify a building.
Romans 16:5 'Greet the church that is in their house.”
Paul refers to the church in their house, not a church building, but a body of believers.