Genesis 19:35-38 Darby Translation 1890 (DARBY)

35. And they gave their father wine to drink that night also. And the younger arose, and lay with him; and he did not know of her lying down, nor of her rising.

36. And both the daughters of Lot were with child by their father.

37. And the first-born bore a son, and called his name Moab: the same is the father of the Moabites to this day.

38. And the younger, she also bore a son, and called his name Ben-ammi; the same is the father of the children of Ammon to this day.

Genesis 19