And it came to pass in the days of Amraphel king of Shinar, Arioch king of Ellasar, Chedorlaomer king of Elam, and Tidal king of nations; In the days of Amraphel - Who this king was is not known; and yet, from the manner in which he is spoken of in the text, it would seem that he was a person well known, even when Moses wrote this account. But the Vulgate gives a different turn to the place, by rendering the passage thus: Factum est in illo tempore, ut Amraphel, etc. "It came to pass in that time that Amraphel, etc." The Chaldee Targum of Onkelos makes Amraphel king of Babylon, others make him king of Assyria; some make him the same as Nimrod, and others, one of his descendants.
Arioch king of Ellasar - Some think Syria is meant; but conjecture is endless where facts cannot be ascertained. Chedorlaomer king of Elam - Dr. Shuckford thinks that this was the same as Ninyas, the son of Ninus and Semiramis; and some think him to be the same with Keeumras, son of Doolaved, son of Arphaxad, son of Shem, son of Noah; and that Elam means Persia; see Genesis 10:22. The Persian historians unanimously allow that Keeumras, whose name bears some affinity to Chedorlaomer, was the first king of the Peeshdadian dynasty.
Tidal king of nations - גוים goyim, different peoples or clans. Probably some adventurous person, whose subjects were composed of refugees from different countries.