house2house has a great grasp on simplicity:
Some call them house churches. Some call them organic churches. Some call them simple churches. We prefer to just call them churches. They are rapidly multiplying, simple communities of believers, meeting in homes, offices, campuses, wherever God is moving. This is the pattern common to many parts of the globe, and is now becoming more and more common in the U.S. as well.
Where are two or more are gathered in His name, there is church.
Where “DNA” is present among people, there is church.
“D” stands for Divine Truth (loving God/Jesus)
“N” stands for Nurturing Relationships (loving one another deeply)
“A” stands for Apostolic Mission (being on Jesus’ mission to the world)
Buildings, programs, and professional clergy are not essential elements of a church.
By ‘simple church’, we mean a way of doing and being church that is so simple that any believer would respond by saying, “I could do that!”
By ‘simple church’, we mean the kind of church that is described in the New Testament. Not constrained by structure but by the needs of the extended family, and a desire to extend the Kingdom of God.
By ‘simple church’, we mean a church that listens to God, follows His leading and obeys His commands.
By ‘simple church’, we mean spiritual parents raising spiritual sons and daughters to establish their own families.