Genesis 19:29-31 World English Bible (WEB)
29 When God destroyed the cities of the plain, God remembered Abraham, and sent Lot out of the middle of the overthrow, when he overthrew the cities in which Lot lived.
30 Lot went up out of Zoar, and lived in the mountain, and his two daughters with him; for he was afraid to live in Zoar. He lived in a cave with his two daughters. 31 The firstborn said to the younger, “Our father is old, and there is not a man in the earth to come in to us in the way of all the earth.