Genesis 4:17-18 NIV

17 Cain lay with his wife,1 and she became pregnant and gave birth to Enoch. Cain was then building a city,2 and he named it after his son3 Enoch.

References for Genesis 4:17

      18 To Enoch was born Irad, and Irad was the father of Mehujael, and Mehujael was the father of Methushael, and Methushael was the father of Lamech.