The observation is certainly correct that First and Second Corinthians are in the full sense of the word "letters" and not pieces of literature that were intended for publication, and not "epistles," learned compositions set down in letter form by a literary man. This observation establishes the genuineness of these writings in a peculiar way so that all attempts to prove that they were not written by the Apostle Paul are profitless efforts. No man, save the great apostle, could have composed these two "letters." Philipp Bachmann has the correct idea regarding the interpreter's aim. He should discard the enormous ballast of false opinions and ephemeral notions and not lose himself in hopeless efforts to clear up little historical details. He should seek as the palm of his effort to penetrate with heart and mind into the "demonstration of the Spirit and of power" (1 Cor. 2:4) which is presented in Paul's letters for the spiritual upbuilding of the Corinthian congregation in the faith of our Lord Jesus Christ. - Introduction.