Genesis 4:16

Cain said to the LORD, “My punishment is greater than I can bear.

Behold, you have driven me out today from the surface of the ground. I will be hidden from your face, and I will be a fugitive and a wanderer on the earth. Whoever finds me will kill me.”

The LORD said to him, “Therefore whoever slays Cain, vengeance will be taken on him sevenfold.” The LORD appointed a sign for Cain, so that anyone finding him would not strike him.

Cain knew his wife. She conceived, and gave birth to Enoch. He built a city, and named the city after the name of his son, Enoch.

Irad was born to Enoch. Irad became the father of Mehujael. Mehujael became the father of Methushael. Methushael became the father of Lamech.

Lamech took two wives: the name of the first one was Adah, and the name of the second one was Zillah.