Paul was never a bishop. He was an Apostle. Different Office. Examples :
2 Tim 1:11: Whereunto I am appointed a preacher, and an apostle, and a teacher of the Gentiles.
Acts 13:
1: Now there were in the church that was at Antioch certain prophets and teachers; as Barnabas, and Simeon that was called Niger, and Lucius of Cyrene, and Manaen, which had been brought up with Herod the tetrarch, and Saul.
2: As they ministered to the Lord, and fasted, the Holy Ghost said, Separate me Barnabas and Saul for the work whereunto I have called them.
Acts 9:15: But the Lord said unto him, Go thy way: for he is a chosen vessel unto me, to bear my name before the Gentiles, and kings, and the children of Israel:
16: For I will shew him how great things he must suffer for my name's sake.
Acts 26:16: But rise, and stand upon thy feet: for I have appeared unto thee for this purpose, to make thee a minister and a witness both of these things which thou hast seen, and of those things in the which I will appear unto thee;
17: Delivering thee from the people, and from the Gentiles, unto whom now I send thee,
18: To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.
At no point does it ever say Paul was a Bishop/Pastor/Elder.
Bishops :
Titus 1:
5: For this cause left I thee in Crete, that thou shouldest set in order the things that are wanting, and ordain elders in every city, as I had appointed thee:
6: If any be blameless, the husband of one wife, having faithful children not accused of riot or unruly.
7: For a bishop must be blameless, as the steward of God; not selfwilled, not soon angry, not given to wine, no striker, not given to filthy lucre;
8: But a lover of hospitality, a lover of good men, sober, just, holy, temperate;
9: Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
I ask again how do you get around that? Why do you Ignore Titus and Tim?