Romans 10 How is Christ the end of the law for righteousness to everyone who believes?

Paul was talking to the Jewish believers here. The righteousness of God is Jesus Christ. Now because some of the Jews do not believed that Jesus is the Messiah and He is the only one who will save His people on the last day they still keeping and observing the Law of Moses. The verses talking about that when we believed in Jesus Christ we are not belongs to the curse of the law. The law have no power over us. We are free from the curse, we p death to life, and we becomes the righteousness of God through Christ.