Grace Brethren churches are related through fellowship, rather than a denominational structure. Each congregation is an autonomous organization and is free to make its own decisions and govern itself. By being part of the larger fellowship, the churches voluntarily choose to be accountable to one another and to work together in fulfilling the Great Commission.The Grace Brethren Church of Millersburg is affiliated with the Fellowship of Grace Brethren Churches, which includes more than 40,000 members in more than 300 churches nationwide