Genesis 19:30

28He looked toward Sodom and Gomorrah, and toward all the land of the plain, and saw that the smoke of the land went up as the smoke of a furnace.

29When 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.

30Lot 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.

31The firstborn said to the younger, “Our father is old, and there is not a man on the earth to come in to us in the way of all the earth.

32Come, let’s make our father drink wine, and we will lie with him, that we may preserve our father’s family line.”