Quantum theory is the modern and radical description of the real behavior of the submicroscopic world of the atoms developed prominently by Max Planck, Niels Bohr and Werner Heisenberg in the early decades of the 20th century. This theory is founded on the strength of its main framework that one of the fundamental particles of matter- the electron can be found anywhere at the same time around its parent atom- indeterminism point of view.
Apparently quizzical to our intuition but proper application of the exact science of mathematics by some devoted practitioners of the new science as the tool found conclusively that the probability of the electron being positioned at any point at the same time was not zero, hence the omnipresence of this elementary particle in the atomic universe.
Opposed though by many determinist scientists including Albert Einstein, quantum theory has had its way in many fields of practical applications where any other existing physics failed.
What does this indeterministic behavior of the electron has something to do with the dogmatic Christian claim of the omnipresence of God? Many philosophers and psychologists maintained the idea of the parallelism between mind and matter.
Accordingly, the laws of physics describing the natural behaviors of matter, there exists a counterpart in the subtle realm of the human mind. Love for instance has been paired to the always attractive Newton's Universal Law of Gravitation; Heisenberg's Uncertainty Principle in quantum mechanics itself has been speculated to be in parallel with the tendency of the mind to succumb to the psychological problem of indecisions and many more.
The rich history of religious beliefs has it that man had always long for something divine since his first appearance on earth. And this innate yearning for God has been linked by many researchers to the workings of the human mind.
If those thinkers were right after all, then we can comfortably infer that the non-zero probability of the electron being simultaneously present anywhere in its atomic world is the physical counterpart of our religious belief of the omnipresence of God. Although, no one has seen an electron but the effect of its existence and indefinite position are now confirmed as absolute truths of modern science. If this way in attaining truth by parallelism is right, then God's omnipresence is a truth and the existence of the electron means the existence of God.