Martin Buber once wrote that without "You" there would be no "Me". He meant that the character of man is shaped by another man, we are shaped by our existence among other people. This can also be applied to God and man - the essence of God (the godly love "agape") was most clearly revealed when a man was created. It stood out all the more in the stark contrast when a man fell. God is in himself as he is, he does not have to derive his character from anything or measure himself against anything, but a fallen man naturally sees him as different - holy, perfect, unattainable. If he does not want to acknowledge it, he has no choice but to deny him.