Craig Groeschel writes in “Soul Detox”:

My biggest struggle with bitterness started when my family discovered the awful truth about someone we had trusted in a position of authority over my little sister …. Most kids in our small town junior high school took at least one class from [a man named] Max on their journey through the sixth grade. To many kids, Max was a favorite teacher—always cutting up, telling jokes, and handing out easy As. To me, he became the object of the deepest bitterness that I've ever known.

Throughout the years, Max developed special relationships with his favorite students. Though none of us were aware of it at the time, we discovered years later that all his favorite students "happened" to be cute, young girls. My little sister, whom I treasured and loved, became one of Max's victims ….

Some studies show that as many as one out of three girls and one in four boys suffer some sort of sexual abuse. Whatever the numbers, this tragedy must crush God's heart. I know it crushed mine as a brother.

I remember trying to absorb the painful truth. How should I respond? Should we track him down? Have him arrested? Beat the life out of him? Make no mistake; I was furious the moment that I heard about his abuse. But the more I thought about it, my anger blossomed into rage. The seeds of bitterness planted in my heart grew to a full-blown briar patch of revenge. I prayed that Max would suffer eternally in hell, and I vowed to make him suffer on earth before facing God's judgment.

My plan for revenge wasn't necessary. To my bittersweet delight, we found that Max was suffering in a hospital, fighting for his life against a crippling disease, muscular dystrophy. I remember thanking God for his justice in giving Max what he deserved.

Most would agree that my bitterness toward Max was justifiable …. [But] no matter how justifiable my feelings were, in God's eyes my self-righteous hatred was just as sinful as Max's crime. Even writing that statement all these years later remains difficult—how could my desire for justice be considered as sinful as this monster's lustful actions? The vast majority of people would agree that my hate and judgmental rage were more than justified.

In the course of time, however, I learned that bitterness never draws us closer to God. Bitterness is a nonproductive, toxic emotion, usually resulting from resentment over unmet needs …. I wanted [Max] to suffer …. [but] I was punishing no one but myself and those around me who experienced the scalding spillovers of the acid churning inside me.