'According to the Law' in the Bible

And they stood in their place according to their custom, according to the law of Moses the man of God: the priests sprinkled the blood, which they received from the hand of the Levites.

For as you are sent by the king, and by 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 that tremble at the commandment of our God; and let it be done according to the law.

And the drinking was according to the law; none did compel: for so the king had ordered all the officers of his house, that they should do according to every man's pleasure.

Go, gather together all the Jews that are present in Shushan, and fast for me, and neither eat nor drink three days, night or day: I also and my maidens will fast likewise; and so will I go in unto the king, which is not according to the law: and if I perish, I perish.

So I took the deed of purchase, both that which was sealed according to the law and custom, and that which was open:

Now, O king, establish the decree, and sign the writing, that it be not changed, according to the law of the Medes and Persians, which alters not.

Then they came near, and spoke before the king concerning the king's decree; have you not signed a decree, that every man that shall ask a petition of any god or man within thirty days, except of you, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which alters not.