It always disturbs me when others want to hold past forgiven sins against their target, when the problem no longer exists.
Everyone is foolish in their teen years if they are smart, they learn from it and change their behavior.
Those who want to hold past forgiven sins against others love to feel superior and want their target to suffer with guilt the rest of their lives. That all by itself is sin!!!!
There is no purpose in dredging up past failures on others to hold over their head except to pretend to be superior.
Those who have repented in the past from sins and learned from it are in a better place than those who refuse to admit they have failures. Those who refuse to admit will never grow or change, they remain emotional and spiritual infants until they confess to God and those they harmed.
1 John 1:9 "9 If we confess our sins, He is faithful and righteous, so that He will forgive us our sins and cleanse us from all unrighteousness."
God never told us to confess our sins to just anyone who had no part in the knowledge of that sin. Some people think we are accountable to them for sin we never committed against them. God never tells us to confess to one another sins not done against them.
Psalm 32:5 "Then I acknowledged my sin to You and did not hide my iniquity. I said, “I will confess my transgressions to the LORD,” and You forgave the guilt of my sin. Selah"
God told us to confess our sins to those we have sinned against and only them. Unless there is sin that has not yet been confessed and then a friend is allowed to confront them in love about their sin so that they will confess it and forsake it. This is far different from reaching into the past when the sin has already been dealt with and expunged by God through repentance.
Galatians 6:1-2 "1 Brothers, if someone is caught in a trespass, you who are spiritual should restore him with a spirit of gentleness. But watch yourself, or you also may be tempted. 2 Carry one another’s burdens, and in this way you will fulfill the law of Christ."
Asking someone who has repented why they did something is not only useless, it is arrogant. The only answer anyone could give for their sin is that they wanted to do it. No one can give an excuse for any sin.
The reason someone would ask "why did you do it", is to further heap unnecessary grief on the one who is repentant. This is evidence that the person asking the question is full of pride and reveling in your grief.
Remember that anyone who loves to see our failures is never anyone we should share our lives with, they will only look for every opportunity to keep you in guilt, grief and feelings of total failure. Avoid such people as this, they will never pull you out of the bog, they will push you further into it just to feel powerful over you.
Everyone has sins they had to repent from; their very nature was full of sin before they became born again. No matter how clean you think a life is, they are still headed for hell if they have never trusted in Christ. No one is without sin, to act superior and rude toward a repentant brother is to believe they have never sinned.
Romans 3:23 "23 for all have sinned and fall short of the glory of God,"
Those who love Christ grieve with a repenting sinner and are full of joy that they repented.
Galatians 6:1-3 "Bear One Another's Burdens
6 Brothers, if anyone is caught in any transgression, you who are spiritual should restore him in a spirit of gentleness. Keep watch on yourself, lest you too be tempted.
2 Bear one another's burdens, and so fulfill the law of Christ.
3 For if anyone thinks he is something, when he is nothing, he deceives himself."