Philippians 3:1-9 (NIV)
1 Further, my brothers and sisters, rejoice in the Lord! It is no trouble for me to write the same things to you again, and it is a safeguard for you.

2 Watch out for those dogs, those evildoers, those mutilators of the flesh.

3 For it is we who are the circumcision, we who serve God by his Spirit, who boast in Christ Jesus, and who put no confidence in the flesh—

4 though I myself have reasons for such confidence.

If someone else thinks they have reasons to put 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 of Hebrews; in regard to the law, a Pharisee;

6 as for zeal, persecuting the church; as for righteousness based on the law, faultless.

7 But whatever were gains to me I now consider loss for the sake of Christ.

8 What is more, I consider everything a loss because of the surpassing worth of knowing Christ Jesus my Lord, for whose sake I have lost all things. I consider them garbage, that I may gain Christ

9 and be found in him, not having a righteousness of my own that comes from the law, but that which is through faith in Christ—the righteousness that comes from God on the basis of faith.