A bishop was in charge of only one congregation, though others might be under his care until they too could be put under the care of their own bishop. A bishop was titled "angel" (following the passage in Revelation, chapters 2 and 3), defined as "a bishop who has been ordained by an Apostle". All local ministers were subject to him, and he was responsible for the welfare of the congregations committed to his charge. While the angels had full authority within their congregations, it was expected that, having received the apostles, they would acknowledge the apostles' oversight, doctrine and forms of worship. Each angel could have one "help" or "coadjutor" who would also be of the rank of angel.