Why We Can Know That God Exists

Why Jesus is my Hero #9 of 52

Life in a Closed World

Imagine that you’d lived your whole life inside a well-lit room without windows. There’s a door in one wall, but it has remained locked your entire life, and there appears to be no key to it. Your whole experience has been lived out inside this room. From time to time you speculate about what’s outside the room – is there even an outside? A storybook you used to enjoy talked about these things called ‘trees’ and the ‘sky’, and they sound great – but you have no idea if they really exist or if it’s just fantasy. And what on earth do they really look like? All you have is a kind of cartoon representation of them. Are there other people outside the room? How many? What are they like? These are important questions, but whatever answers you can come up with are mere speculation – you simply cannot see beyond the four walls of the room in which you live.

In many ways that’s a fair picture of our musings about the divine. We live within this physical world of what we can see and touch, and though we might speculate about a spiritual world beyond, our inability to see it means we can never really be certain. As long as that door remains locked, agnosticism about life ‘outside the room’ is the perfectly logical state of mind – any claims I might make about “knowing the truth” is sheer arrogance.

Why Agnosticism Is No Longer a Tenable Position

But now imagine somebody bursts through the door – a man who has seen the outside world and lived in it his whole life, and who knows exactly what’s out there. That totally transforms things, doesn’t it? You might still have plenty of questions about this man’s trustworthiness – is he telling you the truth? Is he a reliable witness to the world outside? But now the debate is centred on this man and his character – the possibility for knowledge now exists in a way that it never did before. If the man could prove that he came from outside – if he brought with him a bunch of flowers, say – then to refuse to believe him and to sit down on the floor in a huff and never discover the wonders of the outside world, well that would be a real tragedy, wouldn’t it?

The Apostle Paul claimed that we have had just such an eye-opening opportunity in the life, death and resurrection of Jesus of Nazareth. Previously it made perfect sense to be uncertain about the existence of God and exactly what he’s like – we could make guesses but we could never be certain. But Paul says that in Jesus, God has broken into his world, he’s become visible and taken on flesh and blood. He’s told us what’s “outside the room”, what God is like. And he invites us to come and know him for ourselves. He puts it like this:

“The times of ignorance God overlooked, but now he commands all people everywhere to repent, because he has fixed a day on which he will judge the world in righteousness by a man whom he has appointed; and of this he has given assurance to all by raising him from the dead.” (Acts 17:30-31, emphasis mine)

Why Christianity Is Easy to Disprove

As far as I’m aware, Christianity is the only religion in the world that can be easily disproved: all you have to do – all the authorities at the time of Jesus would have had to have done – would be to find Jesus’ body, and we can all pack our bags and go home. Christianity is rooted in a falsifiable historical event – the resurrection of a man from the dead. That’s something that either did happen or did not happen. And if it did – well then that changes everything. It means we can know the truth for certain – we can know that God exist.

Some people would dismiss all this talk as complete nonsense – obviously people don’t rise from the dead, so to say it’s a “historical event” that really happened makes me a loon. But that’s a logical fallacy. Of course dead people usually stay dead. Of course it would be absolutely extraordinary if even one man in the entire history of the world failed to stay dead. But in the highly unlikely event that Jesus did rise from the dead, then we have to revise our understanding of the world: maybe there is life beyond death after all.

There are still plenty of important questions to be asked, like did he rise from the dead? Even if he did, can we trust what he tells us about God – is this man Jesus a reliable witness? But the debate is now centered around the person of Jesus, it’s no longer mere speculation in the abstract. To refuse to engage with the question of Jesus’ identity now would be desperately tragic.

The Urgency of the Question

And it’s a particularly important and urgent question to investigate, because of what Paul tells us: God has fixed a day on which he will judge the world in righteousness by a man whom he has appointed. There’s a day of judgement coming, and how we’ve responded to Jesus is going to be top of the agenda. Don’t stick your head in the sand and pretend we can never know whether God exists. If Jesus is who he says he is then we absolutely can.

Jesus is the man who shows us that God exists, and that’s why he’s my hero.