Genesis 4:15
And the LORD said unto him, Therefore whosoever slays Cain, vengeance shall be taken on him sevenfold. And the LORD set a mark upon Cain, lest any finding him should kill him.
And the LORD said unto him, Therefore whosoever slays Cain, vengeance shall be taken on him sevenfold. And the LORD set a mark upon Cain, lest any finding him should kill him.