24 If Cain will be avenged seven times, truly Lamech seventy-seven times."
Genesis 4:24 Cross References - NHEB
Genesis 4:15
15 The LORD said to him, "Not so. Whoever kills Cain vengeance will be taken on him sevenfold." The LORD appointed a sign for Cain, lest any finding him should strike him.
Matthew 18:22
22 Jesus said to him, "I do not tell you up to seven times, but up to seventy times seven.