"The person who puts confidence in the flesh says, 'Belonging to my tribe and observing my ritual make me secure in my relationship with God.' In contrast to those who put such confidence in the flesh, the true people of God, the circumcision, put no confidence in national status and religious ceremony. Boasting in Christ Jesus excludes putting confidence in the flesh. Although national identities and sacred ceremonies are not viewed as bad in themselves, they are rejected as the foundation for one's relationship with God or with fellow believers."
G. Walter Hansen, The Letter to the Philippians, p. 222.