Scientific "truths" are always subject to change as more information becomes available.
Once a man discovers that he indeed has a Creator, and that his Creator takes an interest in him, personally, that becomes a settled matter. It becomes the Great Fact in the man's life.
His concept of his Creator may change over time, but the existence of hos Creator is beyond question.
Faith has become belief.
The evidence is in the man's mind and is not subject to review.
As far as approaching it from a scientific angle, Dr. William James did that over a hundred years ago. I doubt that any of our resident Atheists have read his "Varieties of Religious Experiences" in its entirety.
