Genesis 19:30-38

30Lot was afraid to live in Zoar. So he took his two daughters and they went up into the mountains. They lived together in a cave.

31One day, the older daughter said to her sister, ‘Our father is now old. There are no men who live near here, so there is nobody to marry us. We cannot have sex like everyone on the earth wants to do.

32So we should give our father much wine to drink. When he becomes drunk, we will have sex with him. Then our father's family will continue to have descendants.’

33That night they caused their father to become drunk with wine. The older daughter had sex with him. Lot was very drunk. He did not know when she came to him. And he did not know when she left him.

34The next day the older daughter said to her younger sister, ‘Last night I had sex with my father. We should make him drunk with wine again tonight. Then you can have sex with him. As a result, our father's family will continue.’

35So that night, they caused their father to become drunk again. The younger daughter had sex with her father. He did not know when she came to him. And he did not know when she left him.

36In that way, Lot caused both of his daughters to become pregnant.

37The older daughter gave birth to a son. She called him Moab. He became the ancestor of the Moabites.

38The younger daughter also gave birth to a son. She called him Ben-Ammi. He became the ancestor of the Ammonites.