Creationism

God waved his magic wand several times and the Earth, Sun, moon, stars, plants, animals and people just appeared: ZAP ZAP ZAP ZAP ZAP ZAP ZAP! But God was supremely cunning: he created everything in such a way that it looked as if it had taken billions of years to form, even putting fossils in the ground of animals which had never lived, just to make it look as if everything could have come into being purely by accident through hundreds of millions of years of evolution. Perhaps God doesn't want us to be able to prove that he exists because he wants bad people to make the mistake of not believing in him: they will then behave really badly and give him an excuse to send them to burn in hell forever. Because God had to make everything with great care to ensure that no one could ever prove he exists, all the evidence we look at will always make it look as if everything came into being by accident, and so the theory that we evolved from primitive animals will always appear to be valid right down to the last detail: the theory of evolution is therefore effectively true regardless of whether there is actually a God or not.