The border... — The boundaries given are Sidon in the north, Gerar and Gaza in the south and south-west, and thence to the Dead Sea. The only Lasha known is a place famous for its hot springs on the east of the Red Sea Though the Phœnicians may-have occupied this town on their way to Palestine, it could not have been one of their boundaries, so that it is probably some place destroyed in the convulsion which overthrew the cities of the plain. We must notice also that while Sidon is Aradus and Hamath were considerably above it. It is probable, therefore, that both the Arvadite and the Hamathite were still wandering tribes without settlements when this table was drawn up.
Related Commentaries of Genesis 10:19
Genesis 10:19-20
19 And the border of the Canaanites was from Sidon, as thou comest to Gerar, unto Gaza;d as thou goest, unto Sodom, and Gomorrah, and Admah, and Zeboim, even unto Lasha.
20 These are the sons of Ham, after their families, after their tongues, in their countries, and in their nations.