Believing in God Is Not Enough

There is a question every believer should ask themselves at some point with absolute seriousness:

Am I a Christian because I say I am, or because Christ has truly changed my life?

Because the Bible places some deeply uncomfortable examples before us.

Believing in God Is Not Enough

Someone may say:

“I believe in God.”

But James says:

“You believe that God is one; you do well. Even the demons believe—and shudder.”
— James 2:19

Demons are not atheists.

They know that God exists. They know who Jesus is. They recognize His authority.

We even find demons saying:

“What have you to do with me, Jesus, Son of the Most High God?”
— Mark 5:7

Therefore, believing that God exists does not make anyone a Christian.

The question is not merely:

“Do you believe in God?”

The question is:

Have you surrendered to Him?

Having Been Near Jesus Is Not Enough Either

Judas was with Jesus.

He heard His teachings.

He saw miracles.

He preached alongside the other disciples.

He was part of the group of twelve.

And yet, he ended up betraying Him.

Jesus said:

“Did I not choose you, the twelve? And yet one of you is a devil.”
— John 6:70

It is possible to be very close to the things of God while having a heart far from God.

You may have spent years in a church.

You may know the songs.

You may know evangelical language.

You may know when to say “amen.”

And yet we should still ask ourselves:

Has my heart truly changed?

Even Using the Name of Jesus Is Not Enough

Acts 19 tells us something astonishing.

There were some men who tried to cast out demons using the name of Jesus.

“Then some of the itinerant Jewish exorcists undertook to invoke the name of the Lord Jesus over those who had evil spirits, saying, ‘I adjure you by the Jesus whom Paul proclaims.’”
— Acts 19:13

They were the sons of Sceva.

But the evil spirit answered:

“Jesus I know, and Paul I recognize, but who are you?”
— Acts 19:15

And then:

“And the man in whom was the evil spirit leaped on them, mastered all of them and overpowered them.”
— Acts 19:16

Even using the name of Jesus in a religious way does not necessarily mean knowing Jesus.

This should make us think.

Even Performing Miracles Is Not the Definitive Proof

Jesus Himself said:

“Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’”
— Matthew 7:22

And Jesus’ response is sobering:

“And then will I declare to them, ‘I never knew you; depart from me, you workers of lawlessness.’”
— Matthew 7:23

Notice that these people call Jesus “Lord.”

They prophesy.

They cast out demons.

They perform miracles.

But Jesus does not say:

“I knew you before, and then you were lost.”

He says:

“I never knew you.”

This means that even an impressive spiritual appearance can hide a heart that was never transformed.

Even Being Baptized Is Not Enough

This example is even more direct.

In Acts 8, we meet Simon the magician.

When Philip preached the gospel:

“Even Simon himself believed, and after being baptized he continued with Philip.”
— Acts 8:13

Look closely.

He believed.

He was baptized.

He joined Philip.

Outwardly, everything seemed to be in order.

But shortly afterward, he wanted to buy the power of the Holy Spirit with money.

Peter replied:

“May your silver perish with you, because you thought you could obtain the gift of God with money!”
— Acts 8:20

And then he tells him something much more serious:

“You have neither part nor lot in this matter, for your heart is not right before God.”
— Acts 8:21

There is the problem.

It was not baptism.

It was not his knowledge.

It was not being with Philip.

It was his heart.

Peter continued:

“Repent, therefore, of this wickedness of yours, and pray to the Lord that, if possible, the intent of your heart may be forgiven you.”
— Acts 8:22

This should make us think deeply:

A person may have believed intellectually, been baptized, and become part of a Christian community, and yet still need a profound transformation of the heart.

So, What Is the Evidence?

Not perfection.

A true Christian continues to struggle.

Continues to fall.

Continues to need grace.

But something has happened inside them.

There is a new direction.

There are new struggles.

There are things that did not concern them before but now grieve them.

There are sins they once justified but now fight against.

There are attitudes they once considered normal but now recognize do not please God.

That is why Paul says:

“Therefore, if anyone is in Christ, he is a new creation.”
— 2 Corinthians 5:17

It does not say:

“If anyone is in Christ, they go to church.”

It does not say:

“If anyone is in Christ, they know doctrine.”

It does not say:

“If anyone is in Christ, they were baptized.”

It says:

“He is a new creation.”

And Now Comes the Uncomfortable Question

If we removed everything external from your life…

the church,

the meetings,

the songs,

the Bible beneath your arm,

the Christian words,

the posts on social media,

what would remain?

Is there anything different about you?

How do you treat your wife or husband?

How do you speak when no one from church is listening?

How do you react when someone contradicts you?

How do you treat a waitress who is taking too long?

How do you talk about someone who has hurt you?

How do you respond when you do not get what you want?

How do you handle your money?

How do you react when no one recognizes you?

That is where the heart begins to show.

Fruit Does Not Save, but It Reveals

Jesus said:

“You will recognize them by their fruits.”
— Matthew 7:20

We are not saved because we produce fruit.

We are saved by grace.

But when God gives life, that life eventually manifests itself.

That is why Paul speaks of the fruit of the Spirit:

“But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control.”
— Galatians 5:22-23

Ask yourself honestly:

Is there more love in me than there was five years ago?

More patience?

More self-control?

Do I forgive more easily?

Am I more humble?

Does my sin grieve me more?

Do I love Christ more?

Because you can learn Christian language without your heart changing.

You can learn doctrine without your heart changing.

You can even learn to behave as others expect you to.

But only God can do this:

“And I will give you a new heart, and a new spirit I will put within you.”
— Ezekiel 36:26

Perhaps the Question Is Not “Am I a Christian?”

Perhaps an even better question is:

What evidence is there in my life today that Christ lives in me?

Not twenty years ago.

Not the day you raised your hand.

Not the day of your baptism.

Today.

Because conversion is not simply something that happened on a certain date.

It is the beginning of a life that God continues to transform.

Paul wrote:

“He who began a good work in you will bring it to completion at the day of Jesus Christ.”
— Philippians 1:6

To Conclude

Do not ask yourself only:

“Do I go to church?”

Ask yourself:

“Is Christ changing my life?”

Not only:

“Do I believe in God?”

But:

“Have I surrendered to God?”

Not only:

“Was I baptized?”

But:

“Do I have a new heart?”

Not only:

“Do others believe that I am a Christian?”

But:

“What does God see when He looks at my heart?”

And perhaps the most sincere prayer we can pray today is:

Prayer

Lord, I do not want to live deceiving myself.

I do not want to settle for outward religion.

I do not merely want to know things about You; I want to know You.

Examine my heart and show me what still does not resemble Christ.

If there is pride, break it.

If there is unforgiveness, remove it.

If there is a double life, expose it.

If there is sin I am justifying, confront me.

And continue doing in me what I could never produce by my own strength.

Give me a new heart.

Make me more like Jesus.

And when people look at my life, may they not simply see someone who claims to be a Christian, but evidence that Christ has truly transformed me.

Amen.