Genesis 4:13

¹¹  And now art thou cursed from the earth, which hath opened her mouth to receive thy brother's blood from thy hand;

¹²  When thou tillest the ground, it shall not henceforth yield unto thee her strength; a fugitive and a vagabond shalt thou be in the earth.

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

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

¹⁵  And the LORD said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And the LORD set a mark upon Cain, lest any finding him should kill him.