Can you believe in the existence of something that you cannot see?Have you ever seen your own brain? We all believe in many things that we have never seen. Have you ever seen the wind? Have you seen history? We see the effects of the wind, but the wind is invisible. We have records of history, but it is by faith we believe that certain historical events happened. Television waves are invisible, but an antenna and a receiver can detect their presence.Do you know that you have a receiver? Prior to becoming a child of God, your 'receiver' (your spirit) is dead because of sin (see Ephesians 2:1). You need to be plugged into the life of God, and then you will come alive and be aware of the invisible spiritual realm.