There seem to have been two question raised about Paul's qualifications and ministry. The first concerned the difference between Paul's letters and his demeanor in person. This might be cause to wonder if it was really Paul who had written the letters. The second concerned his qualifications. This may mean that the problem in Corinth was similar to that in Galatia where Messianic Pharisees were attempting to impose Talmudic rules on the gentiles.