I haven't posted this in a while, but when I read this, I think how foreign this whole concept must have been to those in the early church.The Jerusalem church eventually had elders that pastored it. The apostles also 'pastored' in their ministry. And some of them travelled quite a bit. But Paul and Barnabas appointed elders in every church. Paul had Titus appoint elders in every city. They were appointing people from within the congregation, from within the city, to pastor the congregation of which they were a part. Eventually, they developed a system (not taught in scripture, certainly not explicitly) where one man was the leader of the elders and was considered the 'bishop'. Scripture calls all the elders bishops, and so did one of the letters from Clement. But in the early centuries, at least in the 4th century, there was a tradition against a bishop leaving one ecclesiastical see for another. Backing up to Biblical times, the elders who pastored the church lived there. Apostles who planted churches or visited them might 'pastor' temporarily, and eventually appoint local pastors from within the very congregations. But I don't see where there were professional pastors who came in and took over a church they weren't a part of because the people were easier to deal with or it offered better career opportunities. Btw, I hear in Eastern Orthodox churches, to get a new priest, the congregation puts forth the man they think is the most like Christ. I suspect church leaders have a say in it, but during the ordination, the congregation has to say 'he is worthy.' If someone says he is not worthy, then the bishops investigate. They can have married priests, so this is much more feasible than in the RCC system