'Kings' in the Bible

Now these are the kings who reigned in the land of Edom, before there reigned any king over the children of Israel: Bela the son of Beor; and the name of his city was Dinhabah.

So all Israel were reckoned by genealogies; and behold, they are written in the book of the kings of Israel: and Judah was carried away captive to Babylon for their disobedience.

He allowed no man to do them wrong. Yes, he reproved kings for their sakes,

The children of Ammon came out, and put the battle in array at the gate of the city: and the kings who had come were by themselves in the field.

It happened, at the time of the return of the year, at the time when kings go out [to battle], that Joab led forth the army, and wasted the country of the children of Ammon, and came and besieged Rabbah. But David stayed at Jerusalem. Joab struck Rabbah, and overthrew it.