You are stuck in 4 dimensions. If indeed there is a creator, it would be safe to assume He exists outside of space and time. The Big bang indicates there was a "time" when there was no space and time.
Safe, convenient, and free of the need for explanation.
Doesn't get any better than that for the tough questions.
In general, I find assertions that concurrently assert a statement AND it's negation to be suspect.
In particular, your statement is factually inaccurate. Big Bang cosmology posits that time began along with space; there is no "before" the Big Bang, as there is no "time" in which to establish a temporal order until the "Big Bang" took place.