I think God is some kind of energy. I've read a book about human resonance. It said that the brain emits a powerful energy with specific wavelength (though it also said that human heart emits even more powerful energy). Many people believe God. The brain emitting energy with specific wavelength. Then it merged with another energy with same wavelength, resulting bigger and bigger energy. The energy is somehow used to create a miracle, like healing sickness. It only can be used when the healer and the patient is both believe in God so the resonance can be happened.
I think it's somehow rational. More rational than God is gravity, or God is time. But i'm agree with klaplunk as he said that God can't be exist without time. We created God, we need time. so God needs time. just an opinion though.