Genesis 4:9-19

9 The LORD said to Kayin, "Where is Hevel, your brother?" He said, "I don't know. Am I my brother's keeper?"
10 The LORD said, "What have you done? The voice of your brother's blood cries to me from the ground.
11 Now you are cursed because of the ground, which has opened its mouth to receive your brother's blood from your hand.
12 From now on, when you till the ground, it won't yield its strength to you. You shall be a fugitive and a wanderer in the eretz."
13 Kayin said to the LORD, "My punishment is greater than I can bear.
14 Behold, you have driven me out this day from the surface of the ground. I will be hidden from your face, and I will be a fugitive and a wanderer in the eretz. It will happen that whoever finds me will kill me."
15 The LORD said to him, "Therefore whoever slays Kayin, vengeance will be taken on him sevenfold." the LORD appointed a sign for Kayin, lest any finding him should strike him.
16 Kayin went out from the LORD's presence, and dwelt in the land of Nod, on the east of `Eden.
17 Kayin knew his wife. She conceived, and gave birth to Hanokh. He built a city, and called the name of the city, after the name of his son, Hanokh.
18 To Hanokh was born `Irad. `Irad became the father of Mechuya'el. Mechuya'el became the father of Metusha'el. Metusha'el became the father of Lamekh.
19 Lamekh took two wives: the name of the one was `Adah, and the name of the other Tzillah.