-- Seventy weeks, 490 years, for Israel to stop sinning and anoint the Messiah Daniel 9:24

-- Jesus told Peter to forgive seventy times seven times Matthew 18:21-22

Daniel 9:24 KJV
[24] Seventy weeks are determined upon thy people and upon thy holy city, to finish the transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy.

Matthew 18:21-22 KJV
[21] Then came Peter to him, and said, Lord, how oft shall my brother sin against me, and I forgive him? till seven times? [22] Jesus saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven.

Luke 17:4 KJV
[4] And if he trespass against thee seven times in a day, and seven times in a day turn again to thee, saying, I repent; thou shalt forgive him.

God will forgive a repentant sinner.

God uses the act of repentance as a program for changing a sinner into an obedient follower.

If a repentant sinner turns again to sin, and then again asks God for forgiveness, that repentant sinner is learning that to be sincere in his act of repentance he needs to change and cease from sin.

God will be merciful to a sinner seventy times seven times.

Luke 18:13-14 KJV
[13] And the publican, standing afar off, would not lift up so much as his eyes unto heaven, but smote upon his breast, saying, God be merciful to me a sinner. [14] I tell you, this man went down to his house justified rather than the other: for every one that exalteth himself shall be abased; and he that humbleth himself shall be exalted.