1) If they come out with this understanding, then JWs are really getting the truth hidden in the Bible and also with truth which we can experiment and find out. We are already endowed with the capacity to live as though in heaven. When we are fully focused on the now we live as though in heaven [for example, three hours in an examination hall are felt by us like three seconds; in contrast three hours waiting in the Airport when we have something urgent to do on arrival are felt by us like three days]. When we base our happiness on perfect behavior of others we live as though in hell because they cannot often rise to the level of our expectation as actions of others depend on many factors and forces often beyond their control. Even when we are wronged, we have the freedom to move ahead leaving the past where it belongs to and to fully focus on the now which again makes us live as though in heaven. Jesus reiterated this saying: “the kingdom of God is within you.” (Luke 17:21)
Jesus did mean Kingdom of God is “within” or “inside” us because he used the same Greek word in other unambiguous verses (such as Luke 11:39) where he says: “You Pharisees clean the outside of the cup and dish, but inside you are full of greed and wickedness.” If one wants he can choose to make his life heaven or hell. It’s all within us because our mind is too wonderful that it can choose to be self-contented (like some of the poor people do) or greedy (like some of the rich people do) in any circumstances.