Genesis 19:29-31 New International Version - UK (NIVUK)
29 So when God destroyed the cities of the plain, he remembered Abraham, and he brought Lot out of the catastrophe that overthrew the cities where Lot had lived.
Lot and his daughters
30 Lot and his two daughters left Zoar and settled in the mountains, for he was afraid to stay in Zoar. He and his two daughters lived in a cave. 31 One day the elder daughter said to the younger, ‘Our father is old, and there is no man round here to give us children – as is the custom all over the earth.