Summary
Are we just physical bodies, or is there more to us? While materialism claims we are nothing more than our physical parts—like brains and bodies—Christianity teaches that we are souls who have bodies. The soul is the real “you,” and the Bible supports this idea by showing that our soul lives on even after the body dies. Three main arguments support the soul’s existence: (1) Scripture clearly teaches that we have souls distinct from our bodies, (2) our identity remains the same over time even though our bodies completely change, and (3) our thoughts, feelings, and choices are non-physical and can’t be fully explained by the brain alone. Real-life cases, like people who function mentally despite severe brain damage, also support the idea that we are more than our physical brains. While brain science shows a connection between mind and body, it doesn’t prove the brain is all there is—just as a computer needs both hardware and software to work. Finally, our ability to make free, meaningful choices points to a soul capable of real decisions. This truth gives every person incredible value and purpose, and reminds us that we are spiritual beings made for a relationship with God that goes beyond this life.
Deep Dive (if time allows)
What are you? Are you just a body, a brain, or is there more to you?
Many people today, especially in the scientific world, believe we are purely physical beings—just a body and a brain. This view is called physicalism or materialism. It says everything about us can be explained by the physical parts: our DNA, cells, neurons, and chemicals in the brain.
But Christians—and many others—believe there’s more. We believe that you’re not just a body, but also a soul. You are a soul that has a body. Your soul is the real “you.” Your body is like your house; it’s important, but it’s not the full picture of who you are.
So how do we know the soul is real? Is there any evidence for it?
Let’s look at three main arguments that point to the existence of the soul:
1) The Bible Clearly Teaches We Have Souls
Let’s start with Scripture. The Bible doesn’t use the word “soul” in a technical, philosophical way, but it clearly shows that we are more than just physical bodies.
For example:
In Matthew 10:28, Jesus says, “Do not fear those who kill the body but cannot kill the soul. Rather, fear him who can destroy both soul and body in hell.” This shows that the soul is distinct from the body—you can destroy the body without destroying the soul.
In 2 Corinthians 5:8, Paul says, “We would rather be away from the body and at home with the Lord.” Paul believes that when we die, we go to be with Jesus. That makes sense if our soul continues on after our body dies.
In Philippians 1:21–23, Paul says he desires to depart and be with Christ. Again, this shows Paul believes his true self can live apart from his body. From start to finish, the Bible treats humans as more than just physical creatures. God made us with a spiritual part—a soul—that can exist even after our bodies die.
2) You Are Not the Same as Your Body
Think about this: everything in your body changes over time. Every cell, every molecule—eventually gets replaced.
If someone met you as a baby and sees you now as a teenager, not one cell in your body is the same. But you’re still you. You’ve been the same person through all those changes.
So here’s the question: What makes you “you”? What stays the same?
It’s not your body—it’s your soul.
This leads to an important truth:
You are not just a body—you are a soul that uses a body.
The body changes, but the soul stays the same. That’s why we can say, “I’m the same person I was at 5 years old,” even though nothing about our bodies or even personalities are the same.
This idea is powerful because it shows we’re not just machines made of meat. We have an inner, non-physical self that stays the same through all of life’s changes.
3) Your Thoughts and Feelings Are Not Physical
Here’s another way to think about it:
Right now, you might be having thoughts about what I’m saying. Maybe you’re feeling curious or confused. Maybe you’re thinking, “I hope this ends soon.” Whatever it is—you’re thinking and feeling things.
Now ask yourself: Are your thoughts made of stuff? Can you touch a thought? Can you see it under a microscope?
No. Thoughts and feelings aren’t physical. They’re immaterial—meaning they don’t have size, shape, or mass. You can’t weigh them or cut them open.
Yes, your brain is involved in thinking. But the brain isn’t the same thing as the mind. The brain is a physical organ in your head. Your mind—your thoughts, beliefs, desires, emotions—is something else. It’s part of your soul.
Let’s break it down:
- Your brain is like a piano.
- Your mind is like the music.
The piano is a physical instrument. But the music is something different. You need the piano to make music, but music isn’t made of wood and strings—it’s something higher.
In the same way, your brain is needed to function, but your mind—and your soul—is something more.
A Real-Life Example
Here’s a fascinating story that shows this:
A girl named Katie had hydrocephalus—a condition where fluid builds up in the brain. When doctors scanned her head, they found she had almost no brain tissue. Her brain had been mostly destroyed by the pressure.
But here’s the thing: she could still talk, see, and understand things. How is that possible?
If the brain were the only thing responsible for thinking, that shouldn’t have been possible. But if we have souls—a non-physical part of us that thinks, feels, and makes choices—then her situation makes sense.
There are many stories like this, where people with damaged brains can still think or experience things in ways science can’t explain.
But What About Brain Science?
Now, you might be thinking: “Wait, don’t scientists say that everything we think and feel comes from the brain?”
Yes, some scientists do say that. And it’s true that when you think or feel something, your brain shows activity. But that doesn’t prove the brain is all there is.
Here’s an example: imagine pressing keys on a computer keyboard. Letters appear on the screen. The keyboard causes something to happen, but the software is behind the scenes making sense of it all.
Your brain is like the hardware. Your soul is the software.
You can’t see software, but it’s real. And when the hardware is damaged, the software might not run properly—but it still exists.
Free Will and the Soul
Here’s another clue we have souls: we can make free choices.
If we were only physical beings—if our brains were just chemical machines—then everything we do would be determined. We wouldn’t really have free will; we’d just react based on chemistry, like a robot.
But you know that’s not how it works. You can choose what to say, what to do, even what to believe. You’re responsible for your choices.
Free will only makes sense if we have a soul—a part of us that rises above the physical and can make real, meaningful decisions.
Your Soul Is Valuable
Here’s the bottom line: You have a soul. You are a soul. This truth gives you incredible value.
You’re not just a pile of atoms. You’re not just a brain. You are a spiritual being made in God’s image. That means your life has deep meaning and purpose.
And it also means this life isn’t all there is. Because you have a soul, you can have a relationship with God—a relationship that continues even after death.
Discussion Questions
- If every cell in your body has changed since you were a little kid, how can you still be the same person? What does that say about who we really are?
- Can thoughts, feelings, and free choices be fully explained by the brain, or do they point to something non-physical like a soul? What examples support your view?
- How does believing that you are a soul made in God’s image affect the way you think about your value, your purpose, or how you treat others?
- If the soul is real and lives beyond the body, how should that impact the way we live now? What does it mean for our relationship with God?
This discussion is based on the teaching from Sean McDowell at Biblical Training. To see the original lesson, click here.