The existence or absence of Gd can not be proved in principle. Because there is a place for faith. And if the question of the existence of God was in the plane of knowledge, it would exclude faith. But why is it necessary? The fact that the Faith can be unlimited (as opposed to knowledge). And according to the principle of equivalence of form it gives a "pass" in Ein Sof (Infinity). If it was not - we (or rather the soul) would have been doomed to the limb. But this can not be, because the soul has infinite divine nature