If God wants something from me, he would tell me. He wouldn't leave someone else to do this, as if an infinite being were short on time. And he would certainly not leave fallible, sinful humans to deliver an endless plethora of confused and contradictory messages. God would deliver the message himself, directly, to each and every one of us, and with such clarity as the most brilliant being in the universe could accomplish. We would all hear him out and shout "Eureka!" So obvious and well-demonstrated would his message be. It would be spoken to each of us in exactly those terms we would understand. And we would all agree on what that message was. Even if we rejected it, we would all at least admit to each other, "Yes, that's what this God fellow told me."[2]
Excuses don't fly. The Christian proposes that a supremely powerful being exists who wants us to set things right, and therefore doesn't want us to get things even more wrong. This is an intelligible hypothesis, which predicts there should be no more confusion about which religion or doctrine is true than there is about the fundamentals of medicine, engineering, physics, chemistry, or even meteorology. It should be indisputably clear what God wants us to do, and what he doesn't want us to do. Any disputes that might still arise about that would be as easily and decisively resolved as any dispute between two doctors, chemists, or engineers as to the right course to follow in curing a patient, identifying a chemical, or designing a bridge. Yet this is not what we observe. Instead, we observe exactly the opposite: unresolvable disagreement and confusion. That is clearly a failed prediction. A failed prediction means a false theory. Therefore, Christianity is false.
Typically, Christians try to make excuses for God that protect our free will. Either the human will is more powerful than the will of God, and therefore can actually block his words from being heard despite all his best and mighty efforts, or God cares more about our free choice not to hear him than about saving our souls, and so God himself "chooses" to be silent. Of course, there is no independent evidence of either this remarkable human power to thwart God, or this peculiar desire in God, and so this is a completely "ad hoc" theory: something just "made up" out of thin air in order to rescue the actual theory that continually fails to fit the evidence. But for reasons I'll explore later, such "added elements" are never worthy of belief unless independently confirmed: you have to know they are true. You can't just "claim" they are true. Truth is not invented. It can only be discovered. Otherwise, Christianity is just a hypothesis that has yet to find sufficient confirmation in actual evidence.
Be that as it may. Though "maybe, therefore probably" is not a logical way to arrive at any belief, let's assume the Christian can somehow "prove" (with objective evidence everyone can agree is relevant and true) that we have this power or God has this desire. Even on that presumption, there are unsolvable problems with this "additional" hypothesis. Right from the start, it fails to explain why believers disagree. The fact that believers can't agree on the content of God's message or desires also refutes the theory that he wants us to be clear on these things. This failed prediction cannot be explained away by any appeal to free will--for these people have chosen to hear God, and not only to hear him, but to accept Jesus Christ as the shepherd of their very soul. So no one can claim these people chose not to hear God. Therefore, either God is telling them different things, or there is no God. Even if there is a God, but he is deliberately sowing confusion, this contradicts what Christianity predicts to be God's desire, which entails Christianity is the wrong religion. Either way, Christianity is false.
So this theory doesn't work. It fails to predict what we actually observe. But even considering atheists like me, this "ad hoc" excuse still fails to save Christianity from the evidence. When I doubted the Big Bang theory, I voiced the reasons for my doubts but continued to pursue the evidence, frequently speaking with several physicists who were "believers." Eventually, they presented all the logic and evidence in terms I understood, and I realized I was wrong: the Big Bang theory is well-supported by the evidence and is at present the best explanation of all the facts by far. Did these physicists violate my free will? Certainly not. I chose to pursue the truth and hear them out. So, too, I and countless others have chosen to give God a fair hearing--if only he would speak. I would listen to him even now, at this very moment. Yet he remains silent. Therefore, it cannot be claimed that I am "choosing" not to hear him. And therefore, the fact that he still does not speak refutes the hypothesis. Nothing about free will can save the theory here.
