Gods Law, and Jesus'?

Some people say that God wants us to continue keeping the law; keep the sabbath. But Apostle Paul says that circumcision (Law) and uncircumcision is nothing, it is Gods grace and not our obedience to the law that will give us eternal life with the Father. So which is it people, Law or Grace. I believe Jesus says it is more important to do good on every day instead of obeying the law.