The unbearable weight of not forgiving

For all who are struggling with the issue of why forgiveness is absolutely necessary, I highly recommend "Confessions" . I won't mention any specific spoilers to the show as I hope you all will watch it but I will still give a brief description of the movie's theme.

Due to the main character's motive, a horrifyingly wilful and selfish action of his sparks off a series of chain reactions with the other characters involved. However due to the inability of any of the characters involved in the movie to forgive one another, everyone ends up in "living hell" The concluding part of the movie depicts the main character's visualisation of what hell for him is and it is indeed his "press of the button" that triggered it. (Watch the movie to fully understand what I mean as it can be taken both literally and metaphorically.) I was very impacted after the movie due to its dark theme and felt quite heavy as I walked out of the cinema. It is a cautionary tale to me on how revenge can come full circle back to us when we fail to forgive. When we forgive others, we not just make it better for them, we actually make it better for ourselves. Amen.

Do not take revenge, but leave room for God's wrath. For it is written: "It is mine to avenge, I will repay" says the Lord.
Romans 12:19

Do not say "I will pay you back for this wrong" Wait for the Lord, and he will avenge you.
Proverbs 20:22

For if you forgive other people who sin against you, your Heavenly Father will also forgive you. But if you do not forgive others their sins, your Father will not forgive your sins.
Matthew 6:14-15