The Wound That Wouldn't Close

In 2005, researchers at Ohio State University published a remarkable finding. Dr. Janice Kiecolt-Glaser and her team gave small, standardized wounds to married couples, then monitored how quickly they healed. Couples who argued with hostility and contempt healed forty percent slower than those who communicated with warmth. The wounds were identical. The bodies were similar. The only difference was what the couples carried between them.

The science was straightforward: cortisol, the stress hormone released during unresolved conflict, suppresses the immune cells responsible for tissue repair. Bitterness doesn't just feel terrible — it physically prevents the body from mending.

I have never found a more striking metaphor for what Paul was prescribing when he wrote, "Get rid of all bitterness, rage and anger... forgiving each other, just as in Christ God forgave you."

Paul wasn't making a polite suggestion. He was writing a prescription. When we refuse to forgive, we flood our souls with a kind of spiritual cortisol — a constant stress response that suppresses the very grace trying to repair us. Every day we nurse a grudge, we are choosing to keep our own wound open.

Forgiveness doesn't mean the injury never happened. It means we stop producing the poison that prevents our healing. Your body already knows how to mend itself. God has seen to that. We just have to stop getting in the way.