For we are the circumcision, who worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.
All Commentaries on Philippians 3:3 Go To Philippians 3
Didymus the Blind
AD 398
The word spirit signifies above all a deeper and mystic meaning in the holy Scriptures. … This construction is supported by [the verse] “We are the circumcision, who serve the Spirit of God and do not trust in the flesh. ”