'Kings' in the Bible

But what went ye out for to see? A man clothed in soft raiment? Behold, they which are gorgeously apparelled, and live delicately, are in kings' courts.

For I tell you, that many prophets and kings have desired to see those things which ye see, and have not seen them; and to hear those things which ye hear, and have not heard them.

But before all these, they shall lay their hands on you, and persecute you, delivering you up to the synagogues, and into prisons, being brought before kings and rulers for my name's sake.

And he said unto them, The kings of the Gentiles exercise lordship over them; and they that exercise authority upon them are called benefactors.