John Gill Commentary Genesis 14:9

"against Chedorlaomer king of Elam, and Tidal king of Goiim, and Amraphel king of Shinar, and Arioch king of Ellasar; four kings against the five." — Genesis 14:9 (ASV)

With Chedorlaomer king of Elam Who is here mentioned first, being the principal in the war, and against whom the kings of Sodom had rebelled: and with Tidal king of nations, and Amraphel king of Shinar, and Arioch king of Ellasar; who were his allies, confederates, and auxiliaries: four kings with five; those four last mentioned, with the other five before spoken of, that is, they fought with them; or rather four kings against five, as the Vulgate Latin and Tigurine versions, and some others.