Rivalry in the Church. In 1 Corinthians 4:6, Paul urged the Corinthians not to idolize him or his coworker, Apollos. Paul said, "I have applied all these things to myself and Apollos for your benefit, brothers, that you may learn by us not to go beyond what is written, that none of you may be puffed up in favor of one against another." As I read this passage, the Holy Spirit highlighted the words puffed up. Why did Paul say that the Corinthians who picked sides, favoring Paul or Apollos, were puffed up?