Genesis 19:30-38 New American Bible (Revised Edition) (NABRE)
30 Since Lot was afraid to stay in Zoar, he and his two daughters went up from Zoar and settled in the hill country, where he lived with his two daughters in a cave. 31 The firstborn said to the younger: “Our father is getting old, and there is not a man in the land to have intercourse with us as is the custom everywhere. 32 Come, let us ply our father with wine and then lie with him, that we may ensure posterity by our father.” 33 So that night they plied their father with wine, and the firstborn went in and lay with her father; but he was not aware of her lying down or getting up. 34 The next day the firstborn said to the younger: “Last night I lay with my father. Let us ply him with wine again tonight, and then you go in and lie with him, that we may ensure posterity by our father.” 35 So that night, too, they plied their father with wine, and then the younger one went in and lay with him; but he was not aware of her lying down or getting up.
36 Thus the two daughters of Lot became pregnant by their father. 37 The firstborn gave birth to a son whom she named Moab, saying, “From my father.”[a] He is the ancestor of the Moabites of today. 38 The younger one, too, gave birth to a son, and she named him Ammon, saying, “The son of my kin.”[b] He is the ancestor of the Ammonites of today.