I kind of like this analogy because it still sits on the side of what is maybe knowable (or “postulate-able”) based on math that is consistent with the world we observe. Though the existence of the multiverse is not directly observable, and though the reasons for the multiverse differ depend on the choice of the mathematical model used, the idea that such a world exists follows logically from the mathematical models. Seeing that we can infer physical things that we may never be able to measure (though in some cases, the models are testable in principle), it follows logically that even this may not be the entire story.
Granted, we (theists) are basically in the same position as the Greeks like Democritus in speculating that the world is made of atoms or Aristarchus who is the first know recorded person to propose a heliocentric system (“proved” wrong by Plato). (Here, I am of course keeping my eyes in the direction of the plow and not looking side-to-side or back, as @Merv described it.) Deductive and inductive reasoning are very powerful tools, but they can become a dangerous recipe when you have a hammer and everything looks like a nail.
Our reasoning for believing in God are rooted somehow in personal experience and through a long history of a community of faith. In some ways, those experiences abstractly connect with what we have learned and experienced both within that fellowship of believers and even sometimes without.
It certainly isn’t something we can use as a club to force others to think our way – something that zealots on our side do embarrassing often. At the same time, zealots on the other side, who want to rid the world of religion so everything will be wonderful and beautiful again, are also likely smoking opium thinking that their “science” is enough to describe all that is. I can appreciate why they feel that way sometimes, but my impression is that blind belief in science (mind you, “blind belief” not mere “acceptance of” or “respect for” science) is likely to be just as pernicious as blind belief in some cheap god that some charlatan claims he possesses a direct line to in the clouds. Faith is tempered by the realities of living in the world and the long history of a community of people who have wrestled with similar questions through a diversity of circumstances over the course of a very long history. Certainly, the writings help us to find a common language by which to express the experiences we share in common with other people throughout the ages. In some ways, it seems to help when we (by the immeasurable powers of His grace) turn out to be humble and faithful.
– by Grace we proceed