Genesis 19:38 KJV
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.
Genesis 19:38, King James Version
In context
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.