A quick gloss of St. Paul's big three

I believe that the church in our generation needs to rediscover the apostolic Gospel; and for this it needs the Epistle to the Romans. It needs also to rediscover the relation between this Gospel and its order, discipline, worship, and ethics; and for this it needs the First Epistle to the Corinthians. If it makes these discoveries, it may well find itself broken; and this may turn out to be the meaning of the Second Epistle to the Corinthians. (C.K. Barrett, The First Epistle to the Corinthians, 1968)