Your paper“It is likely that in order to survive the onslaught of persecution and heresy, the Church increasingly rallied around and elevated the authority of its leadership.”If this is so, and I suspect it is, it was the exact opposite of God’s original strategySt Jerome, in his commentary on Titus said the following: Hence a presbyter is the same as a bishop, and before ambition came into religion, by the prompting of the devil, and people began to say: ‘I belong to Paul: I to Apollo; I to Cephas,’ the churches were governed by the direction of presbyters, acting as a body. But when each presbyter began to suppose that those whom he had baptized belonged to him, rather than to Christ, it was decreed in the whole Church that one of the presbyters should be chosen to preside over the others, and that the whole responsibility for the Church should devolved on him, so that the seeds of schism should be removed. So, I think the entire persecution/heresy bit had quite an influence on the development of the monarchical bishop. However, pride and ambition might have had something to do with it as well. Moreso in the latter periods of time than the earlier.F F Bruce once wrote that “the early church was designed for catastrophe”. If you have an hierarchical structure all you need to is capture/defile the head and the defilement quickly flows through the entire organisation.Bruce always has some good quotes. And indeed, that is clearly a problem with the hierarchical structure. However, some folks also argue that is the strength of a hierarchy as well. A hierarchy allows you to easier isolate a heresy and deal with it should it infect some of the leadership. It's somewhat paradoxal. However, if Christ would've thought a hierarchy was needed, I think He would've set it up. However, Christ didn't intend for us to control the Church, and remove Him from shepherding it. That is what the hierarchy tries to do.Btw, I tried finding the lang book on sites like Alibris.com , but they run for $70+. I found the other book on Amazon pretty cheap though. I might look into that for future study.