'According to the Law' in the Bible

Because you are sent of the king and his seven counselors, to inquire concerning Judah and Jerusalem, according to the law of your God which is in your hand,

Now therefore let us make a covenant with our God to put away all the wives, and such as are born of them, according to the counsel of my lord, and of those who tremble at the commandment of our God. Let it be done according to the law.