1. No confidence in the flesh (1-6)
Paul had every reason to be proud of his human background and achievements (4-6), but these things did not bring him joy. He gloried in Jesus only. He calls those who taught that circumcision was necessary to salvation, 'dogs.' It was because they put confidence in the flesh--in religious ritual and in human achievement rather than in Jesus' saving work on the cross.
2. To gain Christ (7-9)
Knowing Christ Jesus surpasses everything else in greatness. It is worth losing everything to know Jesus. In order to obey Jesus' command to preach the gospel to the Gentile world, Paul became an outcast from his own people. He even went to prison. But he had no regrets. He had the most precious thing: He had Jesus, and a right relationship with God through him.
Application: Lord, I know that material possessions and human achievements are rubbish compared to the surpassing worth of knowing Christ. Renew my joy in him daily.
One Word: Rejoice in Christ alone