Jasher 2:17
And Lamech, the son of Methusael, became related to Cainan by marriage, and he took his two daughters for his wives, and Adah conceived and bare a son to Lamech, and she called his name Jabal.
And Lamech, the son of Methusael, became related to Cainan by marriage, and he took his two daughters for his wives, and Adah conceived and bare a son to Lamech, and she called his name Jabal.