Bede : And the borders of Canaan extended from Sidon as one enters Gerar, reaching to Gaza, until one enters Sodom, Gomorrah, Admah, and Zeboiim, as far as Lasha. The ancient translation has Lyce for Lasha. It is now called Callirhoe, where hot springs flow into the Dead Sea. Therefore, Sidon was the boundary of the Canaanites to the north, Gerar to the south, Gaza near Egypt." — Commentary on Genesis (Hexaemeron) Jerome : (Verse 19.) And the boundary of the Canaanites was from Sidon, as you come to Gerar, as far as Gomorrah, and Admah, and Zeboiim, to Lasha. These are the cities of Sidon and Gerar, and Sodom and Gomorrah, and Admah and Zeboiim, which are known to all, but it is important to note that Lasha itself is now called Callirhoe, where the hot springs flow into the Dead Sea. — Hebrew Questions on Genesis