10 - The Law the Believer's Rule?

How should believers read, quote and use the law? Are they obliged to obey it as a command, as a rule? If so, are they obliged to obey all the commandments? Or what?
Different schools of thought come up with different answers.
At one extreme, there is the Reconstructionist: Believers have to obey the law, all of it. This includes stoning for witches, adulterers, sabbath breakers, and so on. Believers must do all they can to bring about a Christian State which will enforce the Mosaic law on all its citizens.