How is the righteousness of God received?

Les teaches that since believers are no longer under the law, under the old Mosaic system, the righteousness of God is now manifested without the law, though it is witnessed by the law and the prophets. He explains that people rebel at this, saying they keep the Ten Commandments, but God is not demanding that per se because it is now a whole different set of circumstances. This righteousness is not by law-keeping and not by being religious, but by the faith of Jesus Christ unto all and upon all them that believe. There is no difference, because all have sinned—the law-keeping Jew and the unlaw-keeping Gentile. It is only by faith in the gospel that we believe Christ died for our sins and rose from the dead.