This question is not on point. Of course Paul could speak "authoritatively", he was an apostle. And, he was not appointed by anyone other than God. If anything, that would fly in the face of establishing a hierarchy of churchdom and men who had "authority" over believing congregations. Paul also noted he was the chief among sinners. If all are sinners, did he mean he runs all people in the world? Please stay on the point.
“Of course Paul could speak “authoritatively”, he was an apostle”.
Thank you. This is an important point. Paul had the authority to preach to the church in Rome because he was an Apostle. That is why they wrote to him about their issues, and why he wrote them back, expecting them to obey his directives.
“And, he was not appointed by anyone other than God.”
So you are saying that God appointed men, the Apostles, and gave them the authority to preach his word to men? Isn’t this a heirarchy, established by God, putting the Apostles above those who were not Apostles?