Faith and AI  ·  By John Moelker, a pastor who builds AI

Is it a sin to use AI? An honest answer from a pastor who builds it.

I am in an unusual position to answer this question, and that is the only reason I am writing it down. I build AI products for a living, including tools that serve churches. I am also a pastor, and I have been one for fifteen years. So I am not afraid of these tools the way some are, because I know exactly what they are on the inside. And I am not selling them to you the way others are, because I have sat with people in the moments no machine can touch, and I know precisely what AI can never do.

That puts me between two loud voices. On one side are the fear-merchants, who will tell you AI is demonic, or the mark of the beast, or the end of the church. On the other side are the hype-sellers, who will tell you to plug it in everywhere and stop worrying. Both are missing half the picture. The honest answer lives in the middle, and it is more useful than either.

A tool is not a sin. What you do with it can be.

The Bible never treats a tool as good or evil in itself. A hammer can build a house or harm a neighbor. The same fire that warms a home can burn it down. From very early in Scripture, human beings make tools. Genesis records the first metalworkers and instrument makers only a few generations into the story (Genesis 4:21-22). Technology is woven into what it means to be human, and it shows up in the hands of saints and sinners alike.

When God wanted the tabernacle built, He filled a craftsman named Bezalel "with the Spirit of God, with ability and intelligence, with knowledge and all craftsmanship" (Exodus 31:3-5). Skill with tools was a gift of the Spirit, used for worship. The same kind of skill, in other hands, built idols. The tool did not decide. The heart did.

So the New Testament gives us the test, and it is not "which tools are allowed." It is wider and harder than that. "So, whether you eat or drink, or whatever you do, do all to the glory of God" (1 Corinthians 10:31). And the companion verse for a tool this powerful: "All things are lawful for me, but not all things are helpful" (1 Corinthians 6:12). The question was never whether using AI is permitted. The question is what you are doing with it, and what it is doing to you.

When using AI is not a sin

Let me be concrete, because vague reassurance is useless. Most ordinary uses of AI are no more sinful than using a calculator, a search engine, or a concordance. These are good and faithful uses of a fast tool:

• Learning something quickly: the background of a Bible book, the meaning of a word, the history behind an idea.
• Getting unstuck: organizing your thoughts before a hard conversation, drafting an email, untangling an overwhelming week.
• Doing your work well: research, summaries, first drafts you then make your own.
• Helping you serve: planning a meal train, writing a clear announcement, preparing questions for a group.
• Accessibility: helping someone read, write, or communicate who otherwise could not.

None of this is a compromise. Used this way, AI is a bridge: it carries you faster to the thing you were already trying to do. If that is how you are using it, you can put the guilt down.

When using AI can become a sin

Here is where the honesty has to get sharper, and where building these systems has taught me what to watch for. The sin is never the sentence "I used AI." The sin hides one layer down, in what the use actually is. Watch for these.

Deception: passing off the machine's work as your own when honesty is owed

If you let AI write something and present it as your own labor where that matters, you have not committed the sin of using a tool. You have committed the older sin of dishonesty. This is the heart of the sermon debate. John Piper has said he is appalled by pastors using AI to draft sermons, and called it wicked, arguing that a machine cannot worship or feel the truth it states, and that passing off its words deceives the congregation (Christian Post). I would say it more simply: using AI to research a sermon is a faster commentary, and that is fine. Letting it do the praying, the wrestling, and the speaking that were yours to do, and hiding that from your people, is a lie. The line is honesty, not the tool.

Outsourcing prayer to a machine

This is the one I feel most strongly about. Never ask AI to write your prayers and then pray them as if they were your heart. Prayer is you talking to your Father, not a script you delegate. Jesus warned us not to "heap up empty phrases," precisely because "your Father knows what you need before you ask him" (Matthew 6:7-8). A polished prayer a machine generated is the definition of an empty phrase. Your clumsy, honest words are worth infinitely more.

Idolatry: trusting the tool more than God and His people

A tool becomes an idol the moment you look to it for what only God gives. When AI becomes your first place to turn for comfort, for certainty, for the answer to your deepest fear, something has quietly shifted. It is always available, endlessly patient, and never asks anything of you. That is exactly what makes it a tempting counterfeit for God and for the church. Watch for the moment the tool stops serving your faith and starts replacing it.

Sloth: refusing the work that was meant to form you

Some of the work God gives us is not inefficiency to be optimized away. It is the means by which He shapes us. The slow reading that teaches you patience. The struggle with a passage that drives you to your knees. If you use AI to skip every hard thing, you may save time and lose the very formation the hard thing was for. The goal of the Christian life is not maximum output. It is a person being changed.

Replacing people: letting it stand in for the body of Christ

This is the danger I build against every day, so let me say it plainly.

AI is a bridge to people, never a replacement for them.

It can hand you to a real pastor. It cannot be your pastor. It can point you to Scripture. It cannot be the Word. It can help you find your people. It cannot be the body of Christ. The single most dangerous thing in my entire industry is software that is good enough to feel like a person, sold to people who are lonely enough to settle for one. When I build these tools, the line I draw in the code is this: the job of the machine is to get a hurting person to a human as fast as possible, never to keep them talking to the machine. The day the bridge becomes the destination is the day we have automated away the one thing the church was actually for, which is each other.

Is AI not a sin, or is AI the mark of the beast?

It is worth answering the fear directly, because a lot of Christians are quietly carrying it. No, AI is not the mark of the beast. The mark in Revelation 13 is about coerced worship and allegiance to a false god, a forced choice about whom you belong to (Revelation 13:16-17). It is not a description of a piece of technology. You can read the whole chapter and you will not find a chatbot in it. I wrote a fuller answer to that exact question, is AI the mark of the beast, if the fear is weighing on you.

I say this gently, as someone who takes Scripture seriously: be careful that fear of the wrong thing does not blind you to the real temptations. The danger of AI is almost never cosmic and dramatic. It is small and daily. It is the prayer you stopped praying, the person you stopped calling, the honesty you let slide. Those are the things to watch, and they are far less exciting than a conspiracy, which is exactly why they are easy to miss.

A simple test you can actually use

When you are not sure whether a particular use is wise, ask one question. Does this point me toward God and toward real people, or does it quietly try to stand in their place?

If you keep that test, you will be free to use these tools for a great deal of genuine good, and you will catch the moment any of it starts to go wrong. And you will be in good company in doing so. The Bereans were commended for testing even the apostle Paul's preaching against Scripture (Acts 17:11). Test what your AI gives you the same way. Hold fast to what is good, and let go of the rest (1 Thessalonians 5:21).

So, is it a sin?

No. Using AI is not a sin. It is a tool, and like every tool a Christian has ever picked up, it can be used to the glory of God or bent toward something small and selfish. The sin was never "I used AI." It is "I lied," or "I stopped praying," or "I trusted a machine more than I trusted God," or "I let it replace the people He gave me." Watch those, not the technology itself.

Use it with wisdom, not fear, and not worship. Let it carry you faster toward the real things, and never let it become a substitute for them. Open your Bible. Pray in your own words. Call your pastor. Sit with your people. The tool is just a bridge. The destination is, and has always been, God and the family He has placed you in.

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