Genesis 19:29-31 New English Translation (NET Bible)
29 So when God destroyed the cities of the region, God honored Abraham’s request. He removed Lot from the midst of the destruction when he destroyed the cities Lot had lived in.
30 Lot went up from Zoar with his two daughters and settled in the mountains because he was afraid to live in Zoar. So he lived in a cave with his two daughters. 31 Later the older daughter said to the younger, “Our father is old, and there is no man anywhere nearby to have sexual relations with us, according to the way of all the world.