The modern Christian church is largely a product of taking Paul's side when he and Peter clashed about how much of the Jewish Law applied to these new-fangled 'Christians'. Paul's general approach was that the minutae of practising it largely did not apply. If you ever encounter any, Jews that call themselves Messianic Jews are based on Peter's side. They follow the Judaistic law, but they also recognise Jesus as the Messiah, so they're Christians, too.
Wade.