If Christians are not under the law, are the Ten Commandments no longer good?

Les teaches that when Paul says the old sin nature shall not have dominion over believers because they are not under law but under grace, this does not mean the Ten Commandments are cast aside as no good. They remain holy, perfect, and the mind of God. They are still the criteria for social behavior, whether Christian or non-Christian. Les also explains that the Ten Commandments do not become a criteria of doctrine, which is why he has no compunction about having them in public schools—they are not a religious doctrine in themselves. They are simply the mind of God, and everything within them is for mankind’s own good.