What is a "Community" church? And what is a "Church of the Brethren"? We are a part of the Church of the Brethren, one of ...the oldest Christian groups in America. It began in Germany in the 1700’s. If you want to know what we believe, read the New Testament of the Bible. Or, just look at how we live. “Brethren” might sound like an old-fashioned name. It is. “Brethren” might also sound like...