Genesis 4:15
But the Lord said to him, “Not so4:15 Septuagint, Vulgate and Syriac; Hebrew Very well; anyone who kills Cain will suffer vengeance seven times over.” Then the Lord put a mark on Cain so that no one who found him would kill him.
Genesis 4:24
If Cain is avenged seven times,
then Lamech seventy-seven times.”