Terry,
As you note: Enter our hero Papius ( episkopis or ‘bishop’) of Hierapolis,... "bishop" from 98-117 AD.
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Odd, is it not, that the institution of bishop and the other institutional trappings of the church would be established so early? Especially, if we are called on to give more weight of one early bishop's recollections of the early days than that of others. I would say that his testimony is there, but there are other sources and developments that contradict what he is saying - which is about par for the course.
Under different circumstances, Carl Sagan once noted that decades ago drawing from the fact that Venus was hotter than Earth and it had heavy clouds, some concluded that was life under the clouds - and others went so far to say that it harbored dinosaurs. If you want to see where the dinosaurs come in, consider the inferences surrounding the possibility that Matthew wrote his Gospel in Hebrew. No one's has a copy but it must have had "The Name".
Pappias was by no means the only victim of censorship. Most of the critics of what became orthodoxy we know of largely from not very kind summaries of other writers. But distinct from most of those who wrote voluminously, we have Pappias's own disregard for the word in print - rather his reliance on oral tradition. Since the testimony of Pappias is hearsay evidence, late in his life and what he claimed he had heard from others, then what we have is something like the accounts of children and grandchildren of people who were in Roswell, New Mexico in 1947. Their parents or their grandparents' neighbors saw or claimed... In each case we do not know how the information is filtered. Or for that matter, which oral traditions Pappias shifted to the top of the stack over others.
What if "their " oral tradition, the other bishops, contradicted that obtained from Pappias? And how do we know that it does or does not?
Pappias had contemporaries who were bishops and "church fathers" with similar or better credentials in matters of speaking of the early days. One of these with which Pappias can be contrasted is Ignatius Bishop of Antioch who wrote a number of letters (some spurious but others uncontested) that included his beliefs on theological matters and his views on Paul, Peter and John, not to mention Jesus. As to when he was born (35-50 AD) and died ( 98-118), the brackets are rubbery, yet they seem to indicate he was at least as close to the creation as Pappias.