'Kings' in the Bible

We took the land at that time out of the hand of the two kings of the Amorites who were beyond the Jordan, from the valley of the Arnon to Mount Hermon;

I commanded Joshua at that time, saying, "Your eyes have seen all that Yahweh your God has done to these two kings: so shall Yahweh do to all the kingdoms where you go over.

They took his land in possession, and the land of Og king of Bashan, the two kings of the Amorites, who were beyond the Jordan toward the sunrise;

He will deliver their kings into your hand, and you shall make their name to perish from under the sky: no man shall be able to stand before you, until you have destroyed them.

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