'Kings' in the Bible

And we took at that time the land out of the hand of the two kings of the Amorites, that were on this side the Jordan, from the river Arnon to mount Hermon

And I commanded Joshua at that time, saying, Thine eyes have seen all that Jehovah your God hath done to these two kings: so will Jehovah do to all the kingdoms to which thou shalt go.

and they took possession of his land, and the land of Og the king of Bashan, two kings of the Amorites, who were on this side the Jordan, toward the sun-rising;

And he will give their kings into thy hand, and thou shalt put out their name from under the heavens; no man shall stand before thee, until thou hast destroyed them.

And Jehovah will do to them as he did to Sihon and to Og, the kings of the Amorites, and to their land; whom he destroyed.