'May' in the Bible

They have set up kings, but not by me; they have made princes, and I knew it not: of their silver and their gold have they made them idols, that they may be cut off.

Where now is thy king, that he may save thee in all thy cities? and thy judges, of whom thou saidst, Give me a king and princes?

Who is wise, that he may understand these things? prudent, that he may know them? for the ways of Jehovah are right, and the just shall walk in them; but transgressors shall fall therein.