'Law' in the Bible

In accordance with the law, the drinking was not compulsory; for so the king had instructed all the officials of his house, that they should do according to every man's pleasure.

Then the king said to the wise men, who knew the times, (for it was the king's custom to consult those who knew law and judgment;

"What shall we do to the queen Vashti according to law, because she has not done the bidding of the King Ahasuerus by the eunuchs?"

"All the king's servants, and the people of the king's provinces, know, that whoever, whether man or woman, comes to the king into the inner court without being called, there is one law for him, that he be put to death, except those to whom the king might hold out the golden scepter, that he may live. I have not been called to come in to the king these thirty days."

"Go, gather together all the Jews who are present in Shushan, and fast for me, and neither eat nor drink three days, night or day. I and my maidens will also fast the same way. Then I will go in to the king, which is against the law; and if I perish, I perish."