punishment and forgiveness aren’t identical things.
punishment is part of ensuring fair justice is done. having a just punishment meted out is a necessary component for most people to be able to forgive those that have done horrible thjings, that they are assured the evildoer will get a just punishment. it allows victims to move on and be able to forgive.
if you dont’ think a murderer or any criminal gets a just sentence it makes forgiveness far more difficult.
and this is so true because God tells us to forgive because He wants us to believe He will judge those that do wrong to us. if we don’t believe that, it’s hard to really forgive.
but forgiveness doesn’t mean temporal punishment goes away.