Church Authority

Christadelphians are organized in autonomous local ecclesias (congregations) that govern their own affairs. There is no central denominational hierarchy, no bishop or superintendent with authority over multiple ecclesias, and no central synod that issues binding decisions for the whole community. Each ecclesia is self-governing, manages its own membership, and makes its own decisions about fellowship.

The supreme authority in all matters is Scripture alone. The BASF (Birmingham Amended Statement of Faith) provides a widely-shared doctrinal baseline, but its authority derives from its faithfulness to Scripture, and different ecclesias in different countries may hold to different versions of it. Fellowship between ecclesias is maintained through shared doctrinal convictions and personal relationships, not through institutional structures.

This decentralized polity has historically led to divisions within Christadelphianism over various doctrinal and fellowship questions. Communities that regard themselves as 'amended' or 'unamended' Christadelphians, for example, have sometimes been in limited or no fellowship with each other. The absence of a central authority means that doctrinal disputes cannot be definitively resolved through institutional means — they must be worked out through persuasion, fellowship decisions, and study of Scripture.