The Violence
of Unforgiveness

I realized, one ordinary Tuesday, that I had been rehearsing an argument I hadn't finished — with a person I hadn't spoken to in four years.

In the shower. In traffic. At the edge of sleep. The scene would play, I would say the thing I should have said, they would crumble under its perfect logic, and I would walk away having won something.

Except I never won.

And they weren't there.

The person I hadn't forgiven was living their life somewhere. Probably not thinking about me at all. And I was in my shower, losing arguments to an imaginary version of them, burning energy I didn't have on a fire I refused to let go out.

That is what unforgiveness actually looks like from the inside. Not nobility. Not righteous persistence.

A prison.

Built by your own hands.

"Not forgiving is like drinking poison
and waiting for the other person to die."
— attributed to various, repeated because it's simply true

What Unforgiveness Does to the Body

This is not metaphor.

When you ruminate on a grievance — replay it, rehearse it, reinforce it — your body responds as if the injury is happening again, right now. The stress response activates. Cortisol floods the system. Heart rate elevates. The body enters a low-grade state of threat.

Studies from Johns Hopkins and the University of Tennessee have found that chronic unforgiveness is associated with elevated blood pressure, compromised immune function, higher rates of depression and anxiety, and poorer cardiovascular health.

The person who hurt you did their damage once. But every time you rehearse the wound, you re-inflict it on yourself. The violence of unforgiveness is that it keeps the injury alive — in the body, in the nervous system, in the neural pathways — long after the original moment has passed.

As I explore in the neuroscience of Romans 12:2, neurons that fire together wire together. Every time you return to the grievance, you deepen the groove. The unforgiven hurt becomes, over time, a neural highway — automatic, fast, deeply embedded.

The Distinction That Changes Everything

Most of the resistance I've encountered to forgiveness — in myself and in others — comes from a confusion about what forgiveness is.

So let me name what forgiveness is not:

• Forgiveness is not forgetting. The memory of what happened does not disappear when you forgive. God forgives sins and doesn't remember them (Hebrews 8:12) — but God is omniscient. For us, forgiveness doesn't erase memory. It changes the charge the memory carries.
• Forgiveness is not saying it was okay. Forgiving someone does not mean what they did was acceptable. It means you are releasing the debt from your ledger — not from God's.
• Forgiveness is not reconciliation. This is the most important distinction. Forgiveness is unilateral — you can do it alone, in your heart, before God. Reconciliation requires two people, genuine repentance, rebuilt trust. You are not required to restore a relationship to have forgiven. You are not required to be unsafe to prove you've forgiven.
• Forgiveness is not a feeling. It is a decision that precedes and often outlasts the feeling of peace. You may decide to forgive and still feel the anger. The decision stands. The feeling follows in time.

What forgiveness is: the release of the debt. The choice to no longer hold the person accountable to you for what they did. The act of handing the grievance to God — who is more qualified to judge and more capable of justice than you are.

The Prison Parable

Jesus tells a parable in Matthew 18 that is worth sitting with.

A man is forgiven an impossible debt — ten thousand talents, the equivalent of millions of dollars today. He walks out of that transaction free. Then finds a fellow servant who owes him a hundred denarii — a few months' wages — and has him thrown into prison.

When the king hears this, he hands the first man to the jailers "to be tortured until he should pay back all he owed."

And Jesus concludes: "This is how my heavenly Father will treat each of you unless you forgive your brother or sister from your heart."

Notice the imagery Jesus chose. Not consequence. Not judgment.

Prison.

The unforgiven person is not the one imprisoned in the parable. The one who refuses to forgive is.

Forgiveness and Grief Are Not Separate

Here is where the practical work lives.

You cannot genuinely forgive what you have not genuinely grieved. Premature forgiveness — the kind the church often demands, the kind that happens before the wound has been named and felt — is not actually forgiveness. It is burial.

The wound goes underground. Still present. Still radiating. Now labeled as forgiven, which means it can't be examined.

Real forgiveness moves through grief. You name what was taken from you. You feel the weight of the loss. You bring that weight to God and say: I cannot carry this anymore. I hand this to you.

As I wrote about in why smart Christians struggle to feel their feelings, the processing of emotion is not the enemy of faith. It is the terrain that faith must walk through. Forgiveness is no different.

"Forgiveness doesn't let them off the hook.
It releases you from the hook you've been hung on."

What Forgiving Looks Like in Practice

For me, forgiveness has looked less like a single decision and more like a repeated return.

There are wounds I have forgiven that I have had to revisit. Not because the forgiveness didn't happen — but because the grief had more rooms than I knew. Each room required its own act of release.

This is normal. It is not failure. It is the nature of deep wounds healing from the inside out.

Some practices that have helped:

• Writing out exactly what I am forgiving — specific, named, not minimized. Not "I forgive them for everything" but "I forgive them for this specific thing that cost me this specific thing."
• Praying the prayer of release — naming the debt and consciously handing it to God. Sometimes out loud. Spoken, not just thought.
• Noticing when the rehearsal starts — the shower argument, the imaginary confrontation — and choosing differently. Not suppressing, but redirecting. "I already gave that to God. It's not mine to hold."
• Being patient with the process. Forgiveness is rarely done once. Sometimes it takes years of returning to the same act. That's not weakness — it's honesty about the depth of what you're carrying.