With respect to the New Jerusalem, that is in the new heaven and new earth (Rev 21). That is also where God will walk among His people. This is where people who are saved (Rom 10:9&10) will go. Those that believe and are baptized (born of water and the Spirit) will enter the Kingdom of God.
Therefore, while we yet are in the flesh, we are a nation under God. Though God is above all things forever.