Genesis 19:32-38 ▼

32 Come, let's make our father drink wine, and we will sleep with him, that we may preserve our family through our father.|

33 They made their father drink wine that night: and the firstborn went in, and slept with her father. He did not know when she lay down, nor when she arose.

34 It came to pass on the next day, that the firstborn said to the younger, |Look, I slept last night with my father. Let us make him drink wine again tonight. You go in, and lie with him, that we may preserve our father's family.|

35 They made their father drink wine that night also. The younger went and slept with him. He did not know when she lay down, nor when she got up.

36 Thus both of Lot's daughters became pregnant by their father.

37 The firstborn bore a son, and named him Moab. He is the father of the Moabites to this day.

38 The younger also bore a son, and called his name Ben Ammi. He is the father of the people of Ammon to this day.