Genesis 4:23 And Lamech said unto his wives, Adah and Zillah, Hear my voice; ye wives of Lamech, hearken unto my speech: for I have slain a man to my wounding, and a young man to my hurt. 10 I MC VC

Genesis 4:24 If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold. 10 I MC VC