One day, the older daughter said to the younger daughter, “Our father is already old and there is no man in this remote area that we could take as our husband. We will have no children. Let us make our father get drunk with wine and lie with him to preserve our family lineage.”
So they got their father drunk with wine that night. And Lot’s oldest daughter went in to lay with her father. Lot was so drunk that he didn’t know when she lay down and arose.
The next day, Lot’s older daughter told the younger daughter, “I slept with our father last night. Now it is your turn to go in and lay with him tonight so that we may have descendants to preserve our family lineage.”
And so the two daughters of Lot made their father drink wine that night. This time, Lot’s younger daughter went in to lay with him. Again, Lot was too drunk to realize when she lay down and arose.
Thus, Lot’s daughters became pregnant through their father. The older daughter gave birth to a son and called him Moab. Her son Moab is the father of the Moabites. The younger daughter also gave birth to a son. She named him Ben-Ammi. Ben-Ammi is the father of the Ammonites.