Genesis 4:15

12 when thou tillest the ground, it shall not henceforth yield unto thee its strength; a fugitive and a wanderer shalt thou be in the earth.

13 And Cain said unto Jehovah, My punishment is greater than I can bear.

14 Behold, thou hast driven me out this day from the face of the ground; and from thy face shall I be hid; and I shall be a fugitive and a wanderer in the earth; and it will come to pass, that whosoever findeth me will slay me.

15 And Jehovah said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And Jehovah appointed a sign for Cain, lest any finding him should smite him.

16 And Cain went out from the presence of Jehovah, and dwelt in the land of Nod, on the east of Eden.

17 And Cain knew his wife; and she conceived, and bare Enoch: and he builded a city, and called the name of the city, after the name of his son, Enoch.

18 And unto Enoch was born Irad: and Irad begat Mehujael: and Mehujael begat Methushael; and Methushael begat Lamech.