From Jroc,
"Today fundamentalist Christians appear to stand for moral values more so than the Jews -- particularly ironic when we consider that Christianity's moral underpinnings come directly right from us. Yet tragically, less traditional branches of Judaism often have higher visibility and better PR. It is thus all the more imperative that we show the world just what we stand for." Rabbi Dovid Rosenfeld
God's laws were given to all Israel. The Jews kept them while the other tribes lost them, until the New Testament was revealed to their descendants through the ministry of Jesus Christ and the apostles. It is Christianity that raised the Law to the higher moral level that God intended.