So forgiveness is something very old as man. If there is no sin, then there won't be any forgiveness but man is a mortal a s canal being so there would always be sin and forgiveness as well. Forgiveness is not forgetting because the brain doesn't easily forget how things played out but forgiveness means letting go or accepting your fate or outcome without grudge for your offender after knowing what he did to you.
The book of first John lets us know that there are two kinds of sin namely; sin unto death and sin not unto death - and that if you're offended or trangressed upon but it is not a sin unto death, then you should gorgive that person who has trangressed against you.
**● 1 John 5:16 (KJV):**
If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it.
Now a sin not unto death is described as one which was not planned nor premeditated like it happened unconsciously. If one sins while knowing that what he is about to do is not right unto God and man, then it is a sin unto death.
**● Hebrews 10:26–27 (KJV):**
26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
Lastly, there is also a question of how mnay times you shall forgive one who has tresspassed against you. Jesus answered while saying that you should forgive your brother who wrongs you seventy times seven (70 × 7). This myst be a lot of sin to be commited by someone agajnst another person particularly 🙂. So what Jesus was trying to teach was that you should forgive your brother always and not count number of transgressions.
*Remain Blessed !*
https://youtu.be/oAcMa8zhQgY