Episcopal Christians living in the area between the north and south borders of Tennessee, the Tennessee River (west) and approximately the Eastern Time line, belong to a mega church of about 15,000 members, the Episcopal Diocese of Tennessee.

This is a missionary diocese dispersed in 51 missionary outposts (congregations) throughout the diocesan area, and led by the Bishop, The Right Reverend Bertram Nelson Herlong, with the cathedral and diocesan offices in Nashville. Furthering the missionary enterprise, local clergy lead the congregation's worship and encourage members' missionary and ministry activities.