God

Okay, so we know the universe had a beginning. And we know there must be at least one non-material thing that created it. What else do we know about non-material things?

We know for instance that whatever created the universe has more power than all the power in the universe and that it is intelligent, capable of thinking on levels infinitely beyond our own abilities.

How do we know those things?

It's not difficult. We know that whatever force produces an effect must be sufficient to account for all the force within the effect; an effect cannot be greater than its cause. If an effect were greater than its cause, then there would be some part of the effect that was uncaused‑that would have come from nothing. But since nothing comes from nothing, an effect cannot be greater than its cause.

Now for intelligence. Matter and energy are not capable of ordering themselves. Left to themselves they tend toward maximum disorder. It takes intelligence to bring about order in our material world. When you see a powerful computer, you don't suppose it just happened by accident, you ask who designed it, who built all its parts, who put those parts together. When that computer functions, you don't assume it does that by accident, either; you ask who wrote the program that guides it.


The universe has much more design than any computer in it (the computer is, after all, part of the universe, and the part cannot be greater than the whole). Human brains are thousands of times more complex than any computer. The scientific mind will ask the same questions about the order in the universe that it asks about the computer: who designed It, who gave it the program by which it processes so much information, who built its parts? If it didn't design itself, then its designer must be non‑material and must have intelligence greater than that in the universe.


Okay, but that doesn't prove that God exists.

You're right. We Christians believe much more about God than that He is more powerful and has more intelligence than the universe. But tell me-what would God have to do to prove to you that He exists?

I don't really know what it would take to convince me that God exists. But I'm willing to listen to any reasons you have.

That's great. Now, one more question: If God proved to you that He exists, would you trust Him?

I'm not sure I'd be willing to trust God, but perhaps I would. You'd have to give me some good reasons to do it. How can we know that God exists?
There are three basic ways we know things: reason, experience, and authority-and we Christians add a fourth, revelation, which is really another kind of authority.

Pure reason-logic and mathematics-affords absolute or 100% proof of things. Experience and authority only afford approximate proof. But we don't denigrate experience and authority simply because they don't give absolute proofs. We still trust them a great deal-sometimes we trust them 100% even though they don't give us 100% proof.


For instance, experience might tell you it's safe to cross the street. But you don't have absolute proof. Still when you cross the street you take 100% of yourself across; you trust yourself 100% to the answer experience gives to the question, "Is it safe for me to cross the street now?” Every day we make decisions like that trusting ourselves 100% to things we cannot know with 100% certitude but that we can know with varying degrees of certitude.


Sometimes we trust ourselves completely to something even when there is a fairly high degree of certitude that the thing will turn out to fail us. If we can only see two options, and one of them will almost certainly bring us disaster and the other has even a very low degree of certainty of saving us, we might well trust ourselves—100%—to that highly uncertain option that could mean deliverance.


Imagine, for instance, that you are standing in a sixth floor room of a burning building. You're convinced that if you stay there you will burn to death. You're also pretty sure that if you jump, you'll break your leg or kill yourself, or at least knock yourself out and die when the building collapses on top of you and burns you. What will you do? Quite probably you w1l1jump despite the danger, because you consider the slight chance of your survival by that means to be more attractive than the high chance of death if you stay in the building.


You would never have jumped had the building not been burning and had there been no other life-threatening situation leading you to make that decision. The stakes involved in a decision, then, can justify our trusting some things on little evidence that we would not ordinarily trust even on much greater evidence.


When we approach the question, »How can you prove that God exists?« we're dealing with a question that cannot be answered by pure reason alone-mathematics and logic. It must be answered by some combination of reason, experience, and authority. The evidence given must always fall short of absolute proof, but it is not insufficient for commitment. As with any other question of this sort, we must make our decisions based on degrees of probability. Naturally our decisions will be affected in part by the stakes in the matter.

All this is fine, and I can go along with it. But you still haven't given me any reasons to believe God exists. Are there any?

Yes, I think so. First, experience and reason have led us to believe that the universe was created/Christianity says that the Creator is God. Second, experience and reason have led man to believe that the universe must have been designed by some intelligent being; Christianity says that the Designer is God. Third, Christians say we believe God exists because He has told us so‑that's »revelation,« that special kind of authority I mentioned. Fourth, Christians believe God exists because we believe He appeared in human flesh, He became a man in Jesus Christ.

Wait a minute! Why should I believe all these things?!

You've already agreed to the first two. I'm just telling you that from the Christian point of view, when we say »God« we're referring to that non‑material Creator/Designer. After all, we might as well use some term to designate the Creator/Designer, and throughout history philosophers have used the term »God.«

Suppose the universe does have a creator. Where did that creator come from?

In any chain of cause and effect, there either is or is not a first cause‑a cause uncaused by any other cause. The chain of cause and effect cannot be circular, because then each effect would have to be both before and after its cause.

Nothing tells us that the universe's cause cannot itself be an effect-nothing in reason and experience alone, that is, though Christians believe God tells us so by revelation. But something does tell us that there must be some cause that is not an effect at all.


We're talking about the principle of contingency, i.e., that effects do not explain themselves, do not give the reasons for their own existence. If everything were contingent then nothing would be explained at all. But we know there must be a reason for the existence of the universe, since once it did not exist and later it did. If there is a reason for anything to exist, then something must not be contingent. Something must be uncaused.


No matter how many links we might think are in the chain of cause and effect, there either is a beginning to the chain, or there is no chain at all. But we believe there is a chain, so we must believe there is a beginning to it. This beginning is what the great philosophers, like Aristotle and Plato, called the »uncaused Cause.« When we Christians speak of God, we mean the »uncaused Cause«‑though we mean much more than that: that the uncaused Cause is persona intelligent, loving, good, just, and other such things.

Okay, so there's an uncaused Cause that's powerful and intelligent. But what about your two other reasons for believing God exists?

At this point we're really asking not whether God exists, but what God is like. Fair enough?

Yes.

We know what God is like because He has told us by revelation and because He became a man in Jesus Christ to demonstrate to us what He is like. So if we really want to know what God is like, the best way is to meet Jesus. The Bible tells us about Him.