Genesis 4:16-18

Then Cain left the presence of YAHWEH and journeyed to the Land of Wandering, east of Eden. Cain slept with his wife and she conceived and bore Enoch. Cain was building a city at the time, so he named it the Village of Enoch, after his son. Enoch’s son was Irad, and Irad’s son was Mehujael, and Mehujael’s son was Methushael, and Methushael’s son was Lamech.