Therefore, Father had to go through so much persecution and suffering. That was a seven year course and seven more years were necessary to enter the direct dominion of God. That is the realm where Satan can never take you away from God. Father reached that point in 1960, with the Holy Wedding. All the universe is a stage for spirit world.
Spirit world is the world where everything communicates.
We are entering the stage now where we communicate with spirit world. Even physically, with the advent of satellites, etc. If we have spiritual communication with God, this is possible to an even greater degree. In the beginning, God wanted to have dominion over the whole universe through the Divine Principle. Because of the Fall though, the physical and spirit worlds came under Satan.