Genesis Chapter 4, Verse 24

24: If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold.- edit KJV text
24: Sevenfold vengeance shall be taken for Cain: but for Lamech seventy times sevenfold.— edit Douay text
24: Because vengeance has been exacted seven times on Cain's behalf, on Lamech's [it shall be] seventy times seven.— edit LXX text