All nations, including kingdoms, have citizens. And all nations require immigration status. The Kingdom of God is no different.Every Kingdom citizen today is naturalized citizen. We emigrated from a foreign country ( a dominion of darckness ,see col.1:13) where we as a race had been "exiled'' ever since Adam's rebellion in the garden of Eden at the time ,the human race lost citizenship in heaven.Whe lost our citizenship because we lost uor property ,our territory. Don't forget that without territory, there is no Kingdom;and without akingdom,there can be no kingdom citizenship.