Genesis 10:19

19The territory of the Canaanite extended from Sidon as one goes to Gerar, as far as Gaza; and as one goes to 10:19 The fact that Genesis mentions the four cities of Sodom, Gomorrah, Admah, and Zeboiim as still standing testifies to the antiquity of this account. These cities of the plain were completely destroyed in Abraham’s time (Gen 19:27-29; Deut 29:23).Sodom and Gomorrah and Admah and Zeboiim, as far as Lasha.