Genesis 4:24
If Cain is avenged seven times, then Lamech seventy-seven times.
Genesis 4:15
Jehovah replied to him: If anyone kills Cain, he will suffer vengeance seven times over. Then Jehovah put a mark on Cain so that no one who found him would kill him.
Matthew 18:22
Jesus said to him: Not seven times; but seventy times seven.
Treasury of Scripture Knowledge
Summary
                            If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold.                        
                    If
Seventy
Bible References
If
                                        Genesis 4:15                                        
                                                            
                        Jehovah replied to him: If anyone kills Cain, he will suffer vengeance seven times over. Then Jehovah put a mark on Cain so that no one who found him would kill him.
                                    Seventy
                                        Matthew 18:22                                        
                                                            
                        Jesus said to him: Not seven times; but seventy times seven.