One of the most difficult - and critical - questions for believers to settle is “what world am I a part of?” Jesus, in Matthew 6:21, states that “where your treasure is, there will your heart be also.” Whatever place we consider to be our true “home” determines our priorities and our loyalty. It impacts every relationship.
Many Christian songs (for example “Turn Your Eyes Upon Jesus”) accurately describe the effect of meditating on this place where we best belong.
Where I think some songs and some thinking goes wrong is imagining that this home and this citizenship is a matter of "place.” It is not.
It is a matter of time. Where believers belong is not some other location “far, far way.” We belong to a different age. We belong to a future and to a King who is coming back here, to this earth. Just before his warning about treasure and our hearts, Jesus taught his disciples to pray:
Our Father who is in heaven,
Hallowed be Your name.
Your kingdom come.
Your will be done,
On earth as it is in heaven.
Jesus is here hiniting at something he speaks about much more directly in other places, not "the end of the world" but the ending of one age and the coming of another (see, for example, Mt. 24:3, Mk. 10:30 and Lk. 20:34-35). The letters of the New Testament use this same language (see 1 Cor. 2:6, Eph. 1:21 or Heb. 6:5), and the Bible ends not with the dissolution of the world but its remaking (Rev. 21:1-4). The long invisioned marraige between "heaven and earth" is finally fulfilled!
This way of talking about "what's next" means that the world we inhabit today is not a place we are “just passing through” but a place we are visiting, so to speak, from the future. We are indeed “aliens” (1 Peter 2:11), but what sets us apart is not distance from this place and the things in it but a difference in our perspective and loyalty - when the Bible speaks about the "age to come," the implication that the writers almost always move to is our present lives: we are committed, in everything we do, to the King who is waiting at the door! We are committed to a way of life that may be out of sync today - humility, peace, grace - but will be here soon. We can live that way now! We are from the future.