Boasting?

Philippians 3:4-7 4 though I myself have reason for confidence in the flesh also. If anyone else 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 of Hebrews; as to the law, a Pharisee; 6 as to zeal, a persecutor of the church; as to righteousness, under the law blameless. 7 But whatever gain I had, I counted as loss for the sake of Christ.

Hmm... I was thinking what is the difference when we share our testimony of following Christ with Paul's.

Isaac