If Kayin shall be avenged sevenfold, truly Lamech seventy and sevenfold.
Y'shuw`a saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven.
And YY said unto him, Therefore whosoever slayeth Kayin, vengeance shall be taken on him sevenfold. And YY set a mark upon Kayin, lest any finding him should kill him.