super-Jew

 Paul was a Pharisee - iow, kind of a super Jew, obeying every one of the laws correctly.

Paul talks about be a do-gooder Pharisee compared to being a follower of Jesus.

Philippians 3

7 But what things were gain to me, these I have counted loss for Christ. 

8 Yet indeed I also count all things loss 

for the excellence of the knowledge of Christ Jesus my Lord, 

for whom I have suffered the loss of all things, 

and count them as rubbish, 

that I may gain Christ 

9 and be found in Him, 

not having my own righteousness, 

which is from the law, 

but that which is through faith in Christ, 

the righteousness which is from God by faith; 

10 that I may know Him 

and the power of His resurrection, 

and the fellowship of His sufferings, 

being conformed to His death