Genesis 19:37
The firstborn bore a son, and named him Moab. He is the father of the Moabites to this day.
World English Bible (Public Domain)
In context
Before · Genesis 19:35–36
35They made their father drink wine that night also. The younger went and lay with him. He didn’t know when she lay down, nor when she got up. 36Thus both of Lot’s daughters were with child by their father.
37The firstborn bore a son, and named him Moab. He is the father of the Moabites to this day.
After · Genesis 19:38
38The younger also bore a son, and called his name Ben Ammi. He is the father of the children of Ammon to this day.