God uses his program of conviction and repentance to change a man from being a sinner to a saint, a repentant sinner.

John 8:9 KJV
[9] And they which heard it, being convicted by their own conscience, went out one by one, beginning at the eldest, even unto the last: and Jesus was left alone, and the woman standing in the midst.

Matthew 9:13 KJV
[13] But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.

-- It is not that a person cannot keep the law but that a person has not kept the law, for all have sinned --- Romans 3:9; Romans 3:23; Romans 5:12

-- God's plan of repentance begins with the conviction by the Holy Spirit --- John 8:9

-- God forgives seventy times seven times --- Matthew 18:21-22

-- God forgave Judah seventy times seven times with the Seventy Week prophecy --- Daniel 9:24-27.

-- If we confess our sins, God cleanses us from all unrighteousness --- 1 John 1:9

A person will be convicted of their sin, repent, and be saved.

OR

A person will harden their heart, block their conscience, continue in their sin, and be lost.

Repentance is a change of behavior program
When your conscience tells you you have disobeyed God, and you realize you have sinned:
-- repent, apologize to God for what you have done
-- confess your sin to God
-- ask God to help you do better

God forgives seventy times seven times:
-- Jesus told Peter, you have seventy times seven times to repent
-- Try, try again

Repent is a self-correcting program:
-- Repentance is a self-correcting program, invented by God, and if applied, it works.
-- Each time you repent to God for doing wrong, your conscience grows stronger and will soon start to control your actions.