The Holy Spirit did not go into such detail about the Pharisees in the New Testament just so we could understand a group unique to the first century. Pharisaism is a poisonous weed that grows in every garden of orthodox religion. Pharisaism is every bit the threat to the orthodox today that it was then.
J.D. Greear, Humble Orthodoxy: Holding the truth high without putting people down
danger, error, heresy, pharisaism, pharisees