HOW DO WE KNOW GOD EXISTS?

The Universe Had a Beginning and Something Had to Start It

Everything that begins has a cause. This isn’t religious, it’s logical. Nothing comes from nothing. The universe began to exist, and all the scientific evidence points in that direction. Whether it’s the Big Bang theory or the observable expansion of galaxies, the cosmos had a starting point.

So the real question is: What started it?

Random chance doesn’t explain it. Matter, time, and space came into being—so the cause must exist outside those things. That means something timeless, spaceless, and immaterial.

That sounds a lot like... God.

“In the beginning, God created the heavens and the earth.” Genesis 1:

“For since the creation of the world God’s invisible qualities… have been clearly seen, being understood from what has been made.” Romans 1:20

Creation Is Fine-Tuned for Life

Imagine walking into a room and finding a universe-making machine with dials—each set with unimaginable precision. One dial controls gravity. One controls the expansion rate of the universe. Another, the strength of nuclear forces. Even a tiny shift, in just one setting, would make life impossible.

But every dial is perfectly tuned. Not to just any universe—but to this one, where stars form and water exists and life is even possible.

That isn’t chaos. That’s craftsmanship.

As Stephen Hawking noted, “The remarkable fact is that the values of these numbers seem to have been very finely adjusted to make possible the development of life.”

And as Psalm 19:1 says,

“The heavens declare the glory of God; the skies proclaim the work of his hands.”

Right and Wrong Are Real. So Where Did They Come From?

Most people agree that love is better than hate, and justice is better than cruelty. We instinctively know some things are good and others are evil. But where did that knowledge come from?

If we’re just chemicals and instincts, then morality is just preference. But that’s not how we live. We cry out when children are harmed, when lies ruin lives, when racism rips people apart.

That cry comes from somewhere deep and it reflects a law written on our hearts.

“They show that the requirements of the law are written on their hearts, their consciences also bearing witness…” Romans 2:15

C. S. Lewis, once an atheist, put it plainly:

“If the universe has no meaning, we should never have found out that it has no meaning.”

The Longing for God Is Universal

Wherever you go in the world, whether to bustling cities or forgotten villages, you will find people reaching for something beyond themselves. This is not a modern trend. It has always been true.

From ancient pyramids to mountain altars, from desert chants to cathedral hymns, humanity keeps building ladders toward heaven. Even where no formal religion exists, you’ll find stories of a higher power, of meaning, of life beyond this one.

Why is that?

We don’t teach babies to desire milk, they cry because they’re born hungry. In the same way, people ache for transcendence because it’s been planted inside them.

We want justice that outlives time. Love that doesn’t fade. A story that doesn’t end. Every longing we feel seems to hint: You were made for more than this.

The Bible doesn’t dismiss this hunger. It explains it.

“He has set eternity in the human heart; yet no one can fathom what God has done from beginning to end.” Ecclesiastes 3:11

We’re not just animals that evolved consciousness. We are image bearers of a Creator made to walk with Him, made to belong. This longing for God is not weakness or wishful thinking. It is a signpost in our souls, pointing us home.

C. S. Lewis wrote,

“If I find in myself desires which nothing in this world can satisfy, the only logical explanation is that I was made for another world.”

That’s why no matter how much we achieve, we still search. No matter how deeply we’re loved by others, we still hope for something higher. Because the echo of Eden still rings in us. And the invitation of God still stands.

Jesus of Nazareth Is Impossible to Explain Without God

Even for those who don’t follow Him, Jesus of Nazareth remains the most compelling figure in human history. More books have been written about Him, more paintings painted, more music composed, and more lives changed in His name than in the name of any other person who ever lived.

And yet, who exactly was He?

Jesus was a Jewish carpenter born into poverty under Roman occupation, with no political power, no army, no wealth, and no formal education. He never traveled far from His birthplace. He died young, humiliated, executed like a criminal. From a purely worldly perspective, His life should have faded into obscurity.

“In the beginning was the Word, and the Word was with God, and the Word was God… and the Word became flesh and dwelt among us.” John 1:1, 14

But it didn’t.

Within a few years of His death, His followers were proclaiming not just His teachings, but His resurrection. And they were doing so in the city where He died, and that publicly, and at great personal cost. These weren’t people trying to start a religion. These were people who believed they had encountered God in the flesh and seen Him alive again after death.

How do you explain that?

Jesus wasn’t just a good teacher. He claimed to be the Son of God. He healed the sick, forgave sins, and predicted His own death and resurrection.

And then it happened.

His tomb was empty. His followers, terrified and hiding, became bold and unshakeable. They preached the resurrection at the cost of their lives. The movement exploded across the world.

Why?

Because they weren’t spreading a myth. They were telling what they saw. Jesus didn’t just claim to reveal God, He claimed to be God. And history has never been the same. He is either who He said He was or He is the most unexplainable figure in all of time.

Lives Are Still Being Changed

If God were merely a theory, Christianity would have faded centuries ago. But He’s not. He is real. He is present. And He is still changing people today.

God is not a distant concept to admire or argue over. He is a living, acting, intervening presence who heals the human heart. Across continents, cultures, and centuries, people testify—not just to believing in God, but to encountering Him. The evidence is not just in books or arguments. It’s written in human stories.

You’ll find it in

• the former addict who was enslaved to darkness, and now sings with joy and walks in freedom.

• the bitter skeptic who set out to disprove Christianity and ended up falling to their knees, overwhelmed by the reality of Christ.

• the woman who lost everything, yet found in her suffering a peace and strength no pain could take away.

• the teenager whose identity was fractured by rejection, but who discovered they were seen and loved by the Father.

These are not rare exceptions. They are echoes of the Gospel moving through every generation.

“Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come.” 2 Corinthians 5:17

In every part of the world, in underground churches and prison cells, in hospital rooms and quiet bedrooms, people are crying out to God—and finding that He answers. Not always with thunder. Sometimes with a deep peace that wasn’t there before. Sometimes with a changed desire. Sometimes with the courage to forgive or the strength to live again.

Even in persecution, believers testify that God meets them. Their stories don’t sound like religious slogans—they sound like resurrection.

“Taste and see that the Lord is good; blessed is the one who takes refuge in Him.” Psalm 34:8

Faith is not wishful thinking. It's not a crutch for the weak or a tradition for the old-fashioned. It's a living response to a God who is near, who moves, who speaks, who saves.

If you’ve ever wondered, “Could God really be real?”—ask the ones who’ve been healed. Ask the ones who’ve been forgiven. Ask the ones who should have given up, but didn’t. Or better yet—ask Him yourself.

He’s still in the business of changing lives. And yours might be next.

Final Thoughts: Not Just the Head—but the Heart Also

Belief in God isn’t just a matter of stacking up evidence. It’s not like solving a math equation or assembling a logical formula until the conclusion feels inevitable. The mind matters, but the heart matters just as much.

Yes, God gives us clues in nature. He built beauty into the design of the world. He shaped reason into our minds, morality into our souls, and meaning into our longings. He left fingerprints on every page of history. But none of that is meant to stay at arm’s length. It’s meant to lead you closer.

God is not a riddle to be solved but a Person to be known.

And like any real relationship, knowing Him requires more than observation. It calls for trust. For humility. For the courage to ask honest questions, and the willingness to receive honest answers.

The truth is, God could overwhelm you if He wanted to. He could write His name in fire across the sky or shake the earth with His voice. But He chooses something better. He chooses invitation.

He waits—not because He’s absent, but because love can’t be forced. He doesn’t crash down your door. He knocks.

“Here I am! I stand at the door and knock. If anyone hears my voice and opens the door, I will come in…”

Revelation 3:20

If you’re willing to seek Him not casually but sincerely, He promises to meet you. The God who made the stars is not far away. He is nearer than breath, and more ready to reveal Himself than most people dare to believe.

“You will seek me and find me when you seek me with all your heart.”

Jeremiah 29:13

This is not just about arguments, it’s about encounter. Because behind every reason, behind every longing, behind every question, there is a voice calling you home.

And once you’ve heard it and not just with your ears, but with your soul, no one will ever need to convince you again.