I generally agree that the terms bishop, priest and deacon (as well as "saint" the way St. Paul uses it) are all in flux in the New Testament writings, as so is the hierarchy of the Church. I don't know how exactly St. Paul received his consecration but my guess is that it happened on the road to Damascus directly from Christ.
But these are historical detail. The important thing to our understanding is that according to the scripture the Holy Ghost was sent to the Church first and that Church has a hierarcical structure, which Peter designed under the guidance of the Holy Ghost to perpetuate herself. The notion that men should arrive at their understanding of the scripture privately is nowhere to be seen in the New Testament, and is in fact warned against.
Where do nuns come from?
*sigh* the old "keep 'em ignorant and stupid, and dependent on the clergy" argument. Things would be a lot easier for the RC's if that were still the case....Too bad the Proddies had to go and make the bible available in every language, so men could read it for themselves....