Christianity vs. Spiritual But Not Religious

How to Have a Conversation With Someone Who Doesn't Believe in God

Talking to an atheist or agnostic about faith can feel like one of the most daunting conversations a Christian can have. The stakes feel high. The intellectual terrain feels unfamiliar. And there's a real fear of saying something that sounds naive, or that pushes the person further away. But the conversation is more possible — and more important — than most Christians realize.

The first thing to understand is that atheists and agnostics are not all the same. Some have thought deeply about their unbelief and can articulate careful philosophical objections to theism. Others have simply never found a compelling reason to believe, and the question of God feels distant or irrelevant to their daily life. Some are angry at religion — or at God, which is interesting in itself. Some are genuinely curious but haven't found a version of Christianity that seemed worth taking seriously. Knowing which kind of person you're talking to matters.

Don't be afraid of their objections. The most common objections to Christianity — the problem of evil, the reliability of the Bible, the exclusivity of Jesus — are not new, and they have been answered thoughtfully by serious Christian thinkers for centuries. You don't need to have all the answers yourself. But you should be willing to say 'that's a real question, and I want to think about it seriously' rather than deflecting or getting defensive.

Ask about their story. Most people's unbelief has a history — a moment, a season, a person, an experience that shaped how they think about God. Understanding that history doesn't mean agreeing with their conclusions. It means treating them as a person rather than a position to be refuted. And it often opens doors that argument alone never could.

Be honest about your own faith — including its struggles. A Christian who has never doubted, never wrestled, never sat with hard questions is not very interesting to someone who has thought carefully about unbelief. But a Christian who has faced the same questions and found that Jesus is still worth trusting — that person has something worth hearing. The goal is not to win. It's to be a faithful, honest witness to the God who is already at work in the life of the person you're talking to.

A Side-by-Side Look

Common objections
A thoughtful response
There's no evidence for God. Faith is just belief without evidence — and that's not a reliable way to know anything.
Christians believe the evidence for God is substantial — the existence of the universe, the fine-tuning of physical constants, the reality of consciousness and moral experience. Faith is trust based on evidence, not belief in spite of it (Romans 1:20; Hebrews 11:1).
If God is good and all-powerful, why is there so much suffering in the world? The existence of evil is the strongest argument against a loving God.
The problem of evil is real and Christians take it seriously. The Bible doesn't explain away suffering — it enters into it. Jesus himself suffered and died. The resurrection is God's answer to evil: not an explanation, but a defeat (Romans 8:18–25; Revelation 21:4).
The Bible was written by humans, copied and translated thousands of times, and shaped by political and cultural forces. It can't be trusted as a reliable guide to truth.
The Bible's historical reliability is well-documented and has withstood serious scholarly scrutiny. Christians believe it is the inspired Word of God — not despite its human authors, but through them (2 Timothy 3:16–17; 2 Peter 1:20–21).
Religion has caused more harm than good throughout history. The world would be better off without it.
Religion has been used to justify terrible things — and Christians should be honest about that. But Christianity has also been the driving force behind hospitals, universities, the abolition of slavery, and the modern human rights movement. The gospel, rightly understood, makes people more human, not less (Matthew 5:13–16).

Ready to go deeper?

The Christian Field Guide series gives you the biblical grounding and conversational tools to engage with confidence and grace.