Genesis 19:22 (KJV)

Behold now, this city is near to flee unto, and it is a little one: Oh, let me escape thither, (is it not a little one?) and my soul shall live.

And he said unto him, See, I have accepted thee concerning this thing also, that I will not overthrow this city, for the which thou hast spoken.

Haste thee, escape thither; for I cannot do any thing till thou be come thither. Therefore the name of the city was called Zoar.

The sun was risen upon the earth when Lot entered into Zoar.

Then the Lord rained upon Sodom and upon Gomorrah brimstone and fire from the Lord out of heaven;