Charles Ellicott Commentary Genesis 14:2

"that they made war with Bera king of Sodom, and with Birsha king of Gomorrah, Shinab king of Admah, and Shemeber king of Zeboiim, and the king of Bela (the same is Zoar)." — Genesis 14:2 (ASV)

Bera king of Sodom. —The failure of the attempt to explain the names of these five kings, and of the cities over which they ruled (with one or two exceptions), by the help of the Hebrew language makes it probable that the inhabitants of the Ciccar were either Canaanites who had come from the sea-coast, or men of some Hamite stock who had colonised this region from the east. The latter is the more probable view, as they do not seem to have had much affinity either with the Amorites or with the Jebusites, their neighbours.