To establish the existence of sufficient evidence that theism is true, the theist must demonstrate a chain of divine causation from the Big Bang to the present. For instance, it must be shown that the Big Bang cannot possibly be a natural phenomenon resulting from natural causation. By definition, the God of classical theism is said to be the sole exclusive cause, such that it and only it can be the cause, of any possible Universe in any possible world. Thus to refute the definition of the God of classical theism, it is sufficient to show the existence of possible, plausible, and thus to some extent probable, scientific, naturalistic, explanatory hypothesis for the origin of the Big Bang. Such scientific, naturalistic, explanatory hypothesis of the Big Bang do exist. Dr. Lee Smolin’s “Cosmological Natural Selection”, Dr. Andre Linde’s “Chaotic Eternal Inflation”, Dr. Martin Bojowald’s “Loop Quantum Gravity”, and Dr. Stephen Hawking’s “Wave Function of The Universe” all provide naturalistic possible, plausible, and thus to some extent probable, models of the Big Bang that both explain and are supported by the evidence we have. Therefore the God of classical theism does not and cannot exist.
It is in no ways adequate for the purpose of demonstrating the possibility of theism to simply assert that scientific, naturalistic, explanatory hypothesis fail to account for the cause of the Big Bang. To do so is to make a fallacious “god of the gaps” and “ad-hoc false attribution” argument. The believer must shoulder a burden of positive proof to show that their god, and only their god rather than some other natural or supernatural cause is responsible for the Big Bang. However, since no god or supernatural entity of any sort is ascertainable by any known means, there cannot be any valid concept of god. Then to assert god as a cause of the Big Bang, or anything else, is Non Sequitur.