Matthew 18:22
"Jesus saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven."
Cross References (ranked by relevance)
Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also do ye.
And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.
If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold.
Be ye angry, and sin not: let not the sun go down upon your wrath:
Be not overcome of evil, but overcome evil with good.
He will turn again, he will have compassion upon us; he will subdue our iniquities; and thou wilt cast all their sins into the depths of the sea.
Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the LORD, and he will have mercy upon him; and to our God, for he will abundantly pardon.
I will therefore that men pray every where, lifting up holy hands, without wrath and doubting.