# What is a large language model?

> An AI model trained on vast amounts of text to predict likely next words. It powers ChatGPT, Claude, Gemini, and most Christian chat apps.

Source: https://www.lumin.faith/christian-ai-glossary/large-language-model
By Andrew Kittridge · November 10, 2026

Also called: LLM

## Why it matters for Christians

It predicts plausible language. Plausible is not the same as true.

## What to do

Expect fluent answers, and check the facts. Ask for chapter and verse, then read them. Do not take a confident tone as proof.

## Read more

- [Does ChatGPT believe in God?](https://www.lumin.faith/does-chatgpt-believe-in-god)
- [Can AI interpret the Bible?](https://www.lumin.faith/can-ai-interpret-the-bible)
- [Can AI write a sermon?](https://www.lumin.faith/can-ai-write-a-sermon)
- [Can AI replace a pastor?](https://www.lumin.faith/can-ai-replace-a-pastor)
- [Is using ChatGPT a sin?](https://www.lumin.faith/is-chatgpt-a-sin)

## Related words

- [Model](https://www.lumin.faith/christian-ai-glossary/model.md): The trained system at the core of an AI product. Many apps are built on the same few models from a handful of companies.
- [Hallucination](https://www.lumin.faith/christian-ai-glossary/hallucination.md): When an AI states something false with confidence, such as a made-up fact, quote, or Bible verse.
- [Training data](https://www.lumin.faith/christian-ai-glossary/training-data.md): The text, images, or other material a model learned from.
- [Context window](https://www.lumin.faith/christian-ai-glossary/context-window.md): How much text an AI model can consider at once, including your question, earlier conversation, and any documents provided.

Every word: [Christian AI glossary](https://www.lumin.faith/christian-ai-glossary.md)