God is usually defined as a supernatural being. So far science can only quantify the natural. If the supernatural acts on the natural, then science could measure those effects. Up to now, those effects have been explainable through natural means. Occam’s razor tells us to go with the theory with the fewest assumptions, so the purely natural explanation is chosen.
Perhaps, someday an event could happen that could only be explained by the presence of a God. Until that time, it is matter of faith.
©2016 Stephen L. Martin
Painting: God the Father and Angel by Guercino (Giovan Francesco Barbieri)