In 1 Corinthians Paul seems to be suggesting that the Corinthians should not worry about who is doing the teaching as long as they don't mess with the foundation, which is Christ. Is he endorsing all future speakers or only the apostles?:
NIV 1 Corinthians 3:
21 So then, no more boasting about human leaders! All things are yours, 22 whether Paul or Apollos or Cephas or the world or life or death or the present or the future—all are yours, 23 and you are of Christ, and Christ is of God.
In other words, is his "all things are yours" speech intended to make his hearers more "liberal" about their sources or only to say that all of the apostles are on equal footing?
In other words, is he saying "don't worry about who's speaking because all teachers are have something for you" or is he saying "don't worry about which apostle is speaking because all apostles are beneficial to you"?