This is something I have not searched out throughly but some comments I have read on here puzzled me and therefore I am in search of what the difference in the four mentioned in the title are. I understand that before anything physical was ever created another world existed "The invisible kingdom of God!" When he created the earth and man, wasn't that His physical kingdom? When He created man wasn't he to have dominion over the physical kingdom? I also understand that man lost that dominion at the fall. God's answer to the fall was an offspring through a woman to break the power of satan over our lives. Was God's intent for us to rule the visible world through the unseen world (invisible)? Doesn't He want to do this through the unseen (Spirit of God), living in the unseen (spirit of man) and living in the seen (physical body) on the earth? Wasn't the main focus of Jesus, "The kingdom?" Some scriptures to look at the invisible vs. visible...I looked at Rom. 1:20; Col. 1:16; Heb. 11:3. Well that is enough to get us thinking about what the kingdom is!