So the Lord said to him, “Therefore whoever kills Cain, vengeance will be taken on him sevenfold.” Then the Lord put a mark upon Cain, so that no one finding him would kill him.
and then if he gets up and walks around on his staff, then he who struck him shall go unpunished. Only he must pay for his loss of time and shall see to it that he is thoroughly healed.
for he is the servant of God for your good. But if you do what is evil, be afraid, for he does not bear the sword in vain, for he is the servant of God, an avenger to execute wrath upon him who practices evil.