Philippians 3, starting in verse 15, goes through the end of the chapter and speaks about our citizenship. Where do we find our home? We are to be a reflection of our home, and Paul wants us to understand that our citizenship is in heaven. If we have accepted Jesus Christ as Lord and Savior then we no longer belong to this world. We now belong to Heaven and our actions and attitudes should be reflection of our citizenship.
When other people travel abroad, often we can tell where they are from or what part of the world or a country they come from originally. We can see them through their citizenship. The same should be true of us who follow Jesus Christ. It should be obvious and evident to all that we are citizens of Heaven who are striving to be like Jesus Christ. Can others see that we belong to Christ?