Genesis 19:36-38

UKJV(i) 36 Thus were both the daughters of Lot with child by their father. 37 And the first born bare a son, and called his name Moab: the same is the father of the Moabites unto this day. 38 And the younger, she also bare a son, and called his name Benammi: the same is the father of the children of Ammon unto this day.