Genesis 19:30-38 - Lot And His Daughters
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. 32 Come, let's make our father drunk with wine so we can have sexual relations with him and preserve our family line through our father." 33 So that night they made their father drunk with wine, and the older daughter came and had sexual relations with her father. But he was not aware that she had sexual relations with him and then got up.
34 So in the morning the older daughter said to the younger, "Since I had sexual relations with my father last night, let's make him drunk again tonight. Then you go and have sexual relations with him so we can preserve our family line through our father." 35 So they made their father drunk that night as well, and the younger one came and had sexual relations with him. But he was not aware that she had sexual relations with him and then got up.
36 In this way both of Lot's daughters became pregnant by their father. 37 The older daughter gave birth to a son and named him Moab. He is the ancestor of the Moabites of today. 38 The younger daughter also gave birth to a son and named him Ben-Ammi. He is the ancestor of the Ammonites of today.