1 Corinthians 9 talks about how Paul is willing to give up his right to earn a living from preaching the gospel so that he can be a better servant to others. He talks about how he has become all things to all people in order to win them over to Christ. Paul uses the example of athletes in a race to illustrate how Christians should be disciplined and focused in their faith. He also explains that he preaches the gospel for free because he is compelled to do so by God, not because he expects any compensation. Finally, Paul talks about how he strives to live a disciplined life and to avoid anything that might lead him to sin.