Do you think science will ever answer this question? The universe as a whole is on some level inexplicable, unless we somehow manage to transcend our existence in it...
Saying that a scientist's belief in God causes confirmation bias in his research results is more ad hominem and less productive criticism. Einstein believed in God, and in fact wrote extensively about the relationship he felt between God and his theories of the universe. Likewise many scientists lead productive careers without an iota of their religion (or family, or culture, or whatever have you) impacting the rigor of their work.