'Keep the Law' in the Bible

But certain men who had belonged to the sect of the Pharisees, but were now believers, stood up and said, "It is necessary to circumcise Gentile, and to order them to keep the Law of Moses."

And shall not those who are physically uncircumcised, but who keep the Law, condemn you who are a breaker of the Law, although you have a written law and circumcision?