Genesis 4:24

King James 3 - The Literal Traslation

For Cain is avenged sevenfold, and Lamech seventy seven.

Cross References

Genesis 4:15

And Jehovah said to him, If anyone kills Cain, he shall be avenged sevenfold. And Jehovah set a mark on Cain, so that anyone who found him should not kill him.

Matthew 18:22

Jesus said to him, I do not say to you, Up to seven times, but, Up to seventy times seven.