I believe that something has always existed. The Creator. Everything, as we are given to sense it with our five senses, was created by the Creator. If there was a Big Bang, it was His work. It may be a matter of terminology, but, for example, when FatherofFour posted “But the big bang, if it happened, is God’s creation. Something from nothing.” I agree with him on the first part, but disagree that it means “something from nothing”. I would argue that if the Big Bang is God’s creation then it is something from something (that something being God).
If something always existed then we can just say that the potentials for a Big Bang (whatever those are) always existed. A “god” is not a required step.