Genesis 19:30-38

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 in the earth to come in to us after the manner 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 seed." ³³They made their father drink wine that night: and the firstborn went in, and lay with her father. He didn`t know when she lay down, nor when she arose. <sup>34</sup>It came to pass on the next day, that the firstborn said to the younger, "Behold, I lay 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 seed." ³⁵They made their father drink wine that night also. The younger arose, and lay with him. He didn`t know when she lay down, nor when she arose. <sup>36</sup>Thus both of Lot`s daughters were with child by their father. ³⁷The firstborn bore a son, and named him Moab. The same is the father of the Moabites to this day. ³⁸The younger also bore a son, and called his name Ben-ammi. The same is the father of the children of Ammon to this day.