Genesis 19:35-37

Revised Standard Version

³⁵ So they made their father drink wine that night also; and the younger arose, and lay with him; and he did not know when she lay down or when she arose. ³⁶ Thus both the daughters of Lot were with child by their father. ³⁷ The first-born bore a son, and called his name Moab; he is the father of the Moabites to this day.