1st Corinthians 9:1-6
Paul explained that it’s normal for an Apostle (or a preacher) to eat whatever, drink whatever, and/or have a wife.
1st Corinthians 9:7-18
Paul explained that God’s servants deserve their rewards from people around them.
1st Corinthians 9:19-27
Paul’s effort and humble lifestyle in order to save more people.