What are some good arguments for the Apostle Paul's authority?

Summary

The sermon emphasizes that Paul's apostolic authority in 1 and 2 Corinthians stemmed not from his personal wisdom or skill, but from his direct commission by God and his role as God's mouthpiece. Paul grounded his teachings not in his own intellect, but in the divine authority he was entrusted with. The practical takeaway is that true spiritual authority is rooted in God's call and message, not in human eloquence.