Finally, my brothers, rejoice in the Lord. To write to you again about this is no trouble for me and is a protection for you.
References for Philippians 3:1
Watch out for "dogs," watch out for evil workers, watch out for those who mutilate the flesh.
References for Philippians 3:2
For we are the circumcision, the ones who serve by the Spirit of God, boast in Christ Jesus, and do not put confidence in the flesh-
although I once had confidence in the flesh too. If anyone else thinks he has grounds for confidence in the flesh, I have more:
circumcised the eighth day; of the nation of Israel, of the tribe of Benjamin, a Hebrew born of Hebrews; as to the law, a Pharisee;
as to zeal, persecuting the church; as to the righteousness that is in the law, blameless.
But everything that was a gain to me, I have considered to be a loss because of Christ.
More than that, I also consider everything to be a loss in view of the surpassing value of knowing Christ Jesus my Lord. Because of Him I have suffered the loss of all things and consider them filth, so that I may gain Christ
and be found in Him, not having a righteousness of my own from the law, but one that is through faith in Christ-the righteousness from God based on faith.
References for Philippians 3:9