If God created everything, why would God want to hide it?

Something I read today brought up this thought to me: If God created everything, why would God want to hide it?

He obviously went to absurd lengths to make sure it could NEVER be effectively traced back to him: in fact an objecitve perusal of the universe doesn't point to his existence at all.

So the real question is now which of these is true: On the seventh day God rested, or on the seventh day God laid low and wiped off all the fingerprints he'd left at the scene?