God the Father is the God of the Living. Which is to say all those who are saved are alive and well in Christ. When the end of the world does come there still will be about billions of people living on the earth at that time. The people that died in Christ before the world ends still will be alive in heaven. They will be able to see what going on earth while they are in heaven. Once all this is over God and Christ will have their loving family and their new home will be the new earth and heaven that 21 chapter of book of Revelation talked about. The children of God will not only live forever in love and peace on the new earth and heaven, but they will have the power as Sons and Daughters of God to travel and see and touch all that God the Father has made in the entire universe. You see just about every king as I read about had an empire. The bible says Jesus Christ is the King of kings and the Lord of lords. Jesus Christ's empire is the new earth and heaven that will be made and all the small and huge objects that are located in the entire universe. Now you said. when we die, one or both of us will be wrong. Well you will be wrong. There has been countless of people who died and has been revived back to life and have seen vision of Jesus Christ, the angels, heaven and hell, and so on. Some had vision of that Holy City talked about in Revelation 21 chapter. But just like the bible some people refused to believe.