Philippians 3:1-6 RSV

1 Finally, my brethren, rejoice in the Lord. To write the same things to you is not irksome to me, and is safe for you.
2 Look out for the dogs, look out for the evil-workers, look out for those who mutilate the flesh.
3 For we are the true circumcision, who worship God in spirit, and glory in Christ Jesus, and put no confidence in the flesh.
4 Though I myself have reason for confidence in the flesh also. If any other man thinks he has reason for confidence in the flesh, I have more:
5 circumcised on the eighth day, of the people of Israel, of the tribe of Benjamin, a Hebrew born of Hebrews; as to the law a Pharisee,
6 as to zeal a persecutor of the church, as to righteousness under the law blameless.