You can’t see the wind . . . but you know it is there . . . it exists. You can’t see it with your eyes but you feel it . . . you experience it. At times you can see its impact by the movement of the leaves in the tress . . . but still you cannot actually see the wind.
Much of life is that way . . . you must feel it . . . experience its impact . . . not observe it with only your eyes to know that it is real.