Philippians 3:4-5

4 I myself could have trusted those human ideas. Other people may think that they could trust in those things to save them. Then I would have an even better reason to trust in them. 5 I belong to Israel's people, to Benjamin's tribe. I am a true Jew. They circumcised me when I was eight days old. I was a Pharisee, and I obeyed the Jewish rules very carefully.