Genesis 19:37 in the World English Bible
The firstborn bore a son, and named him Moab. He is the father of the Moabites to this day.
Context
36 Thus were both the daughters of Lot with child by their father.
37 And the firstborn 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 Ben-ammi: the same is the father of the children of Ammon unto this day.