When Inmates Genuinely Convert vs. Jailhouse Religion

One of the most heartbreaking aspects of prison ministry is the prevalence of false conversion. Men under the pressure of incarceration are uniquely susceptible to religious profession. They are lonely, frightened, guilty, and desperate for any source of hope. A rousing service with emotional music and an altar call can produce dozens of “decisions” in an evening—almost none of which will survive the first month. I found the problem especially pervasive among pedophiles, whom, for years, I treated like anyone else and set expectations based on God’s grace being greater than any sin, but eventually I came to realize that those sinners had a truly reprobate mind and there was little chance that God would deliver them from what He had given them over to (Romans 1:28).

I learned to distinguish genuine conversion from jailhouse religion by its fruits, not its fervor. A man who weeps at the altar and then goes back to dealing drugs the next day has not been converted. A man who quietly begins reading his Bible, asking thoughtful questions, changing his behavior without fanfare, and enduring persecution from other inmates for his new convictions—that man may well have been born again. “By their fruits ye shall know them” (Matthew 7:20). Prison Pentecostals tend to have lax standards, not just because of bad theology, but because part of their motivation was to collect tithe money from the inmates. I never collected any money from prisoners. On the contrary, we gave to them regularly for years.

The genuine converts I encountered in prison were few, but they were real. Initially, Ismael was one—a sincere evangelical who shared my faith and became a close, trusting friend over months of shared worship and mutual vulnerability. Marcelo Bonilla, son-in-law of an Assemblies of God pastor, was perhaps the most striking case—a patient with something like Stickler’s syndrome or scleroderma—whose body was failing even as his soul was awakening. I spent hours with Marcelo in his final months, teaching him the Gospel and studying the New Testament epistles one by one, answering his questions, and praying with him. When he died, I wrote a note to his wife saying that I was convinced Marcelo was a Christian and, upon death, had been ushered into God’s presence. My co-Pastor and fellow Baptist minister, Valentín, commented that if Marcelo’s conversion were the only “fruit” of my prison ministry, it would have made the whole ordeal worth it. I have pondered that statement many times since. Five years, five months behind bars—closing in on two thousand days. And one dying man who heard the Gospel from a cellmate and believed. Was it worth it? By any earthly calculation, no. By the calculus of heaven, infinitely yes. “I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance” (Luke 15:7).

But the counterpoint must be told with equal honesty. Leonardo, an old, Marxist ex-professor and pedophile with graduate work in history (ABD) at the London School, whom I invested heavily in, was perhaps my most devastating disappointment. We studied most of the New Testament together in a four-hour session. I prepared him for what I hoped he would become in his future pastoral and evangelistic ministry. He showed genuine interest, asked thoughtful questions, and appeared to grow in understanding. But over time, he became two-faced—spreading gossip, lying, and eventually mounting character assassination campaigns against me. He called Bearing the Cross “trash” and recruited others against me. His trajectory was a textbook case of the seed that fell among thorns: “the care of this world, and the deceitfulness of riches, choke the word, and he becometh unfruitful” (Matthew 13:22). I tell this story not to discourage but to prepare. The minister who invests ten months in a man and watches him fall away will be tempted to despair. Do not despair. Sow the seed. Water it. Pray over it. But remember that the increase belongs to God, not to you. There were others whose names I will not record here, but whose changed lives were evident to anyone watching. They did not claim visions, speak in tongues, or announce miraculous deliverance. They repented. They read the Word. They prayed. They bore the cost of being different in a place that punishes difference.

The church must understand this reality: most professions of faith in prison do not endure. This is not a reason to stop evangelizing. It is a reason to invest in discipleship rather than in emotional decisions. It is a reason to teach sound doctrine, repentance from sin, true faith, and doing good, rather than sentimental religion. It is a reason to measure success not by the number of hands raised but by the number of lives changed over time. “He that shall endure unto the end, the same shall be saved” (Matthew 24:13).

Action Steps

If you are an incarcerated Christian with theological training: Begin teaching. You do not need permission from an institution. You do not need printed materials. You need your Bible and the willingness to open it with other men. Start with one person. If God blesses it, the group will grow.

If you are a volunteer or chaplain: Bring doctrinally sound materials into the prison. Systematic theology primers, confessions of faith, catechisms—these are the tools that build lasting faith. Do not rely exclusively on devotional literature or emotional appeals.

Learn to identify genuine conversion. Look for sustained change over time, not emotional moments. Ask probing questions about what the man believes and why. Be patient—genuine sanctification is slow, especially in an environment saturated with temptation that is terribly divorced from one’s normal human relations.

Confront false teaching directly but lovingly. You are not doing a man a favor by letting him believe heresy. Prosperity theology and carnal Christianity, in particular, must be refuted with a clear biblical argument, because they will destroy the faith of men whose suffering disproves their central claim.

Pray specifically for the men you teach. By name. Daily. The spiritual battle in prison is more intense than in any church you have attended. “We wrestle not against flesh and blood” (Ephesians 6:12). I tell you from experience that achieving this practice can be very hard.

Discussion Questions

How does the lack of resources in a prison setting actually mirror the conditions of the early church? What can modern Christians learn from this parallel?

Why does Reformed theology resonate particularly well in a prison context? What aspects of Reformed doctrine address the lived reality of incarcerated men more effectively than other theological traditions?

How should a prison minister handle the prevalence of Pentecostalism and prosperity theology without being unnecessarily divisive? Where is the line between maintaining doctrinal convictions and preserving unity among believers?

What are the distinguishing marks of genuine conversion versus jailhouse religion? How long should a minister wait before affirming a profession of faith as credible?