“Many will say to me in that day, ‘Lord, Lord, have we not prophesied in thy name? And in thy name have cast out devils? And in thy name done many wonderful works?’ And then will I profess unto them, ‘I never knew you: depart from me, ye that work iniquity.’” ~ Matthew 7:22-23
Contrary to what you hear from the pulpit, the Pharisees’ problem was not that they were good at keeping the law. Jesus accused them of the exact opposite – replacing the law with traditions (orthodoxy).
Much like the Jewish religious establishment of the first century, authentic Reformation/Protestant orthodoxy makes perfect law-keeping the standard for righteousness. This standard also assumes a single-perspective on the law: one that can only condemn.
John Piper’s gospel has a major problem! Scripture teaches that righteousness is “apart from the law”. If righteousness is nothing more than a “forensic (legal) declaration”, then that is NOT a righteousness apart from the law, that is a righteousness that comes from the law!
You can find more information explaining Piper’s law problem in the articles below.
John Piper's Law Problem 