Considering that Saint Paul was a perfect Pharisee of Judaism before he saw the True Light of Christ.

And a Jew who accepts Jesus Christ (Yeshua Messiah) as their Lord & Savior is a Christian (still Jewish)?
Lavyan, Christians righteousness needs to surpass the righteousness of the Pharisees. Pharisees are self righteous. While Christians receive Jesus Christ Righteousness.
Jesus never sinned. That is why He raised from the dead & overcome the curse of sin & death. Sin couldn’t keep Jesus in the grave. He did this for us who believe in Him, so we look forward to raise up like He did on Resurrection Day. He is our righteousness.