Genesis 13:10

13:10 Lot looked up and saw the whole region of the Jordan. He noticed that all of it was well-watered (before the Lord obliterated Sodom and Gomorrah) like the garden of the Lord, like the land of Egypt, all the way to Zoar.

Genesis 14:2

14:2 went to war against Bera king of Sodom, Birsha king of Gomorrah, Shinab king of Admah, Shemeber king of Zeboiim, and the king of Bela (that is, Zoar).

Genesis 19:22

19:22 Run there quickly, for I cannot do anything until you arrive there.” (This incident explains why the town was called Zoar.)