The "unseen", spiritual world is more real than the tangible world we experience with our 5 senses. This is because the reality of the spirit is permanent, eternal and infinite; it transcends time and space. The material, sensory, obvious world is temporary and consists of ever changing facts. It is bound by both time and space. The spirit world is made up of truths that do not change.
When a person accepts Jesus Christ as their personal savior and is born again, they receive the Holy Spirit of God. This Spirit of the living God then dwells within them and is a permanent connection to the infinite, all powerful and all knowing creator of the universe. It is when this Spirit saturates that person’s soul and is released into their physical body that true healing occurs. This saturation displaces doubt and allows the supernatural power of God to be active in them. This is the state in which faith is active and miracles are normal.
I am learning that to have this spiritual experience I, personally, must concentrate my thoughts on God and pay less attention to the material world. I believe that this transformation (of soul saturation) can and will happen instantaneously. However, my own doubt has been preventing me from being completely in touch with the divine.