Science was created so that we could understand that which surrounds us. The forces of nature. Even followers of gods believe that he really doesn't control these forces, he just created them so that they sustain themselves. Science is about studying them. The holy books of the world all conflict upon one and another so any use of one book would be not applying the scientific method. You'd have to use all holy books and seeing that they conflict, they are worthless for use in the accounting of the forces of nature. Science studies the forces, not necessarily the origin of those forces. Whether god made the forces or not it completely irrelevent because the force IS in either case. So science studies what we see, not what we think.