For he is God's minister to thee, for good. But if thou do that which is evil, fear: for he beareth not the sword in vain. For he is God's minister: an avenger to execute wrath upon him that doth evil.
And the Lord said to him: No, it shall not be so: but whosoever shall kill Cain, shall be punished sevenfold. And the Lord set a mark upon Cain; that whosoever found him should not kill him.
If he rise again and walk abroad upon his staff, he that struck him shall be quit: yet so that he make restitution for his work, and for his expenses upon the physicians.