My dear friend, your eyes are deficient even regarding material things.., for there are some substances which you cannot see.. Though they exist, they defy your weak eyes.. You may only see them through a microscope..
If there is not a microscope available, and you cannot see such tiny bodies with your naked eye, would you then deny their existence, merely because you do not see them? If this is the case regarding material things.. what would you say concerning spiritual matters?
With respect to spiritual matters, let your spirit guide you, and do not force it to submit to the body.. Let it soar freely and swim in a world of divine matters as it is said: "Blessed are those who have not seen and yet have believed" (John 20:29)